What we're watching: How Trump's Democrat-blaming plays with the GOP

As pressure builds for Congress to pass legislation that would keep migrant families together at the border, President Trump continues to tweet, blaming Democrats for lawmakers' failure to act and forcing fellow Republicans to contend with his statements.

Reality check: Trump is right that any immigration bill would need significant Democratic support to make it through the Senate, but the GOP's immigration bills aren't even making it through the House, where not a single Democrat vote would be needed to pass legislation.