If you're an Australian living in the US, chances are you've heard it before: “Hey, could you bring this back for me?” Maybe it's your aunt asking you to carry over a care package of Tim Tams and Vegemite. Maybe a friend wants you to grab their prescription from a pharmacy back home. Maybe someone you barely know asks if you can “just pop this envelope” in your suitcase from a post on the Facebook groups.
It all sounds innocent enough. And honestly, most of the time, it probably is. But here's the thing — when you're crossing international borders, carrying items for other people can land you in serious legal trouble, even when everyone involved has the best of intentions.
This is one of those topics where the safest answer is also the simplest one: don't do it.
You Are Legally Responsible for Everything in Your Luggage
This is the foundational point that most people don't fully appreciate. When you walk through customs in the United States, Australia, or any country, you are personally and legally responsible for every single item in your bags. Full stop.
It doesn't matter if you didn't pack it. It doesn't matter if you didn't know what was inside. It doesn't matter if your best friend swore it was just a birthday present. If a customs officer finds something prohibited in your luggage, it's your problem — not the person who asked you to carry it.
This applies equally whether you're arriving into LAX, landing at Sydney Airport, or transiting through any country along the way. Ignorance is not a legal defense, and “my friend asked me to carry it” will not get you out of trouble.
Prescription Medication Is a Bigger Deal Than You Think
This is probably the most common scenario for Australian expats, and it's one that catches a lot of well-meaning people off guard.
Let's say your mom in Melbourne has a prescription medication she wants you to bring over when you visit. Or a friend asks you to carry back some medication they left at your place during their last trip. Seems harmless, right?
Here's the problem: carrying someone else's prescription medication across international borders can be illegal. In both the US and Australia, prescription drugs are controlled substances that are legally tied to the individual named on the prescription. If you're carrying medication that isn't prescribed to you, you could be charged with illegal importation of a controlled substance — even if the medication is completely legal and legitimate for the person it belongs to.
Some medications that are common and legal in Australia are classified differently in the US, and vice versa. Codeine-based painkillers, for example, are available over the counter in Australia but are a controlled substance in the United States. Carrying them into the US without a valid US prescription could result in criminal charges.
The rules vary depending on the specific medication, the quantity, and the countries involved, but the risk is real. If someone needs their medication sent internationally, there are legal channels to do it — carrying it in your suitcase is not one of them.
The Risks You Can't See
The scariest scenarios are the ones where you genuinely don't know what you're carrying. Most people immediately think of the extreme cases — someone hiding drugs in your luggage — and assume that would never happen to them. But it doesn't have to be that dramatic to cause you serious problems.
A wrapped gift could contain items that violate import restrictions. A sealed package might hold food products that breach biosecurity laws. A “harmless” envelope might contain currency over the reporting threshold, which requires a customs declaration. Even something as simple as a wooden souvenir could trigger biosecurity red flags depending on whether it's been treated for pests.
If you haven't personally packed it, inspected it, and verified its contents, you cannot confidently declare what's in your luggage at customs. And making a false or incomplete customs declaration — even unintentionally — is a federal offense in both the US and Australia.
Australia Takes Biosecurity Extremely Seriously
If you're flying back to Australia, this deserves special emphasis. Australia's biosecurity laws are among the strictest in the world, and the penalties are severe. Undeclared food, plant material, animal products, and soil can attract fines of over AUD $600,000, and in serious cases, criminal prosecution.
When someone asks you to carry a food package, homemade treats, or even traditional medicines that contain plant or animal ingredients, you are taking on the responsibility of declaring those items accurately and ensuring they comply with Australian biosecurity requirements. If you don't know exactly what's in the package — and sometimes even if you do — you're putting yourself at real risk.
The same principle applies when entering the US. Customs and Border Protection (CBP) enforces strict rules around food, agricultural products, and undeclared goods, and penalties can include fines and seizure of items.
Currency and Financial Reporting
Here's one that surprises a lot of people: if someone asks you to carry cash, checks, or monetary instruments across a border, you could be stepping into financial reporting obligations you didn't sign up for.
In the US, you're required to declare any currency or monetary instruments over $10,000 when entering or leaving the country. Australia has a similar threshold of AUD $10,000. Failing to declare it — even if the money is completely legitimate — is a criminal offense that can result in the seizure of the funds and potential prosecution.
If someone asks you to carry “a bit of cash” for them, you may not even know how much it is, let alone whether it pushes you over a reporting threshold when combined with your own funds.
What About Gifts and Care Packages?
Look, I get it. Part of the joy of visiting home — or having someone visit you — is the exchange of goodies. There's nothing like opening your suitcase to find a fresh stash of shapes, Cherry Ripes, or your favorite Aussie snacks.
The key difference is this: if you're packing things yourself, you know exactly what's in your bags, and you can declare everything accurately. That's completely different from taking a sealed or pre-packed bag from someone else and adding it to your luggage sight unseen.
If a family member wants to send you a care package, let them mail it. Postal services and courier companies are set up to handle customs declarations and inspections. It's the safer option for everyone involved. Either that or unpack the items in Australia, check everything, and re-pack it before traveling!
The Simple Rule
Airline safety announcements have been saying it for decades, and it applies just as much at customs as it does at the gate: do not carry items for other people.
It doesn't matter how well you know the person. It doesn't matter how innocent the request seems. The moment something is in your luggage, you own the consequences — legally, financially, and potentially criminally.
Be polite about it. Blame it on customs rules if you need an easy out. But be firm. The downside of saying yes is just too significant compared to the minor inconvenience of saying no.
What to Do Instead
If someone genuinely needs something sent between countries, there are legitimate options that don't put anyone at legal risk. International mail and courier services like USPS, Australia Post, FedEx, and DHL all handle cross-border shipments with proper customs documentation. For prescription medications, consult with a pharmacist or doctor about legal options for international transfers. For larger shipments or personal effects, professional relocation and shipping companies (like some of our partners) specialize in exactly this kind of thing.
The systems exist for a reason. Use them.
This article is for general informational purposes only and does not constitute legal advice. If you have specific questions about customs regulations, importing medications, or border control requirements, consult with the relevant government agencies (US Customs and Border Protection, Australian Border Force) or a qualified legal professional.
