I have little knowledge about US but I think USA is not doing too much right nowadays as it must be doing being the big brother.
There are some reasons like getting out of PARIS AGREEMENT, ISOLATIONIST ATTITUDE, VISA ISSUES, WALL MAKING S0ACULATIONS, BREAKING IRAN NUCLEAR DEAL AND MANY MORE. If US will think and negotiate with other countries She will always be on win win side. A leader is always leader till he behaves like leader but when we start acting like kids sometimes people don't us seriously.
In case any body feels my attitude negative he may put his point of view but always in decency.