The guy is either a complete dissembler or suffers from some kind of multiple personality disorder! During the election he lambasted Merkel about immigrants, then he says that he admires here, then he plays nice while she's at the White House and next morning goes back to beating up on her. The word "nevertheless" means that we can ignore the first part of what he said because here comes the real message.

The US puts money into NATO so that it can push its anti-missile and other weapons closer and closer to the Russian border, a large part of the reason for the regime change in Ukraine was to stop its President from closer ties with Russia and to attempt to get US weaponry into that country too. The US doesn't want Europe overrun by Russia because the US would then have no allies over there to help fight off the Russians. It's a similar rationale with Canada - the US could not tolerate having Russia or China on its Northern border and therefore defends us. The US should be honest.