>Are "anti-imperialism" and "anti-war movement" the only possible bases for a
>viable Left politics in the US?
There's a long tradition in U.S. politics that's suspicious of foreign adventures. Some of it is for the wrong reasons - i.e., dislike of foreigners - but there's also a tradition that says that democracy at home is incompatible with empire abroad. So, phrased carefully, it has potential.
Doug