No nation can count on another to be a friend or ally in all respects and in perpetuity.  The US is something of a special case where its power, both military and monetary, is better to be on your side than not.  The question is how to deal with its varying political philosophy, especially now that there's an administration that breaks all traditions of political protocol.  Some see that as a threat, others see it as refreshing; either way, it's more of a "change" than what we've experienced in Canada since 2015.  Yes, the U.S. administration is a different elephant now, and we're better to get on dealing with it rather than try to brawl with it and lose.

As for the U.S. being in moral decline, if you think it's just happening now, you've missed the boat entirely because the precipice of moral decline was broached in the 1960's, exacerbated since then largely by mostly Liberal governments, a leftist entertainment media and abetted by a ratings-hungry news media.