Tim Kaine actually said...

Why is it a good idea for the United States to pull out of a global discussion about the way to deal with the human displacement problem?

I worry very, very much about an--sort of, an isolationist attitude if one of our immune-system strengths in dealing with worldwide threats ...

I can't see how that would benefit either the United States or the world, given your own testimony about the seriousness of the problem.

the U.S. announced that it, alone among nations of the world, was going to pull out of the U.N. Compact on Global Migration.