They've openly - and frequently - criticized each other.
Pennsylvania's Supreme Court just gave the state redrawn congressional districts, but most Republicans aren't on board.
Special counsel Robert Mueller has reportedly been asking about Jared Kushner's Chinese and Qatari investors.
Political scientists ranked all U.S. presidents from "failure" to "great."
The Gridiron Club has hosted past presidents for a roast that takes aim at both political parties.