If Trump wins, will the U.S. become isolationist?

In 1940, as Hitler's troops rolled across Europe, a growing chorus of Republicans argued against sending American weapons to Britain. The United States, they said, would be wasting resources sending help to London and instead Washington should put "America First." Now, former President Donald Trump and his allies in Congress use the same slogan to make similar arguments against sending military aid to another democratic country in Europe under assault by a powerful authoritarian regime. "The American people deserve to know what their money has gone to. How is the counteroffensive going? Are the Ukrainians any closer to victory than…