WW1 was none of America's business. If they hadn't gotten involved, then Britain and Germany would have likely grinded to a halt. Which would mean no treaty, and probably no Hitler/WW2.
TELL ME AGAIN HOW IN ANY WAY, SHAPE, OR FORM, SENDING ARMED FORCES TO OTHER COUNTRIES WHO'VE DONE NOTHING TO US IS "FIGHTING FOR OUR FREEDOM"; GO AHEAD, I'M WAITING