They can put Republicans on the spot in several uncomfortable ways.

His leftist apologists in the U.S. media aren't just blind to Russia's election meddling, but to Putin's xenophobia and homophobia.

The president will betray his political allies without a thought. Jeff Sessions and Sean Spicer learned that the hard way.

The president's "America First" agenda is in tatters. But now he's damaging the country in different, perhaps even more permanent ways.

If Trump fires Robert Mueller or pardons himself, Republicans won't do a thing about it—and our democracy will be changed forever.

The manufactured debate over whether the party should focus on the Russia scandal or health care is obscuring a much more important debate.

The president has proven he'll sell out members of his own tribe. He won't hesitate to do the same to his supporters.