比如說,我從11月在美國呆到次年四月,五月回到加拿大,要多久以後才能再次入境美國呢?
-There is no set period of time that Canadians must wait to re-enter the US after the end of their stay, and you may reenter US a few days later. But you need to prove to the CBP officer that you do not have the immigration intent. If you go forth and back too often and stay in US for too long time, they may not allow you to reenter US.