Canada–United States Safe Third Country Agreement

The Canada–United States Safe Third Country Agreement (STCA) (French: Entente entre le Canada et les États‑Unis sur les tiers pays sûrs) (ETPS) is a treaty, entered into force on December 29, 2004, between the governments of Canada and the United States to better manage the flow of refugee claimants at the shared land border. Under the agreement, persons seeking refugee status must make their claim in the first country in which they arrive, between either the United States or Canada, unless they apply for refugee protection at least 14 days after entering Canada from the United States or qualify for an exception.

Source: Wikipedia — Canada–United States Safe Third Country Agreement (CC BY-SA 4.0)