I'm guessing bringing home some Queens from my many travels would be frowned upon?
Unless you publicly told others the origin of the ants, such as in a forum post, the only person who would know where they came from is yourself.
That said, it remains my opinion that the antkeeping community, and even some scientists, bear striking parallels to the abstinence-only nutjobs who share at least some responsibility for so many STD-ridden schools in the US, along with the highest teen pregnancy rate among developed countries. As long as there are ants and people in abundance on this planet, people (especially curious children) will always seek ants, buy and sell ants, and move ants from one place to another, both purposefully, and accidentally. The best deterrent to potential bio-economic hazards isn't abstinence, but rather excellent containment and responsible antkeeping practices—i.e. information, knowledge, and faithful execution.
It is worth noting that all known invasive ants were first transported and distributed through regular agricultural and other incidental trade, with not a single documented case that hobbyists contributed to these problems whatsoever. Therefore, the risk that hobbyists pose through keeping non-native ants is almost entirely hypothetical, as we all know the almost certain outcome of almost all ants kept in captivity—dead ants.
This mismatch in focus underscores why I intend to produce a video explaining the laws, the science against ant transport, and what to do if you have non-native ants in your possession, for my upcoming YouTube channel.
Edited by drtrmiller, June 3 2016 - 3:40 PM.