I don’t know which is worse, that this might happen in America or that hardly anyone is surprised anymore:
While returning from a trip to the US (in other words, going to Canada) on December 8th, Canadian SF author Peter Watts was attacked, beaten, pepper-sprayed, and imprisoned without access to legal counsel by the US Border Patrol.
Read the article for more details. Follow all the links in the article for yet more details and discussion if you don’t mind “strong” language.