I'm sure it's passe to say that it's both sides, but it is. Consider that the United States no longer has an anti-war party. At the Democratic National Convention, they tried to drown out and laugh off chants of "No more war" from the delegates.
That's because the context didn't have anything to do with war, it had to do with signalling opposition to Hillary.
I could go on and on about how now neither major party opposes fracking, the liberals are now further right of George W. Bush on Israel, and so much more. Americans as a whole show even less empathy nowadays.
Ehhh, not really. On Israel and foreign intervention in general Clinton is to the right of her party, but far to the left of the Bush, even on Israel.