House Democrats vote to hold the attorney general in contempt. Where does this power struggle end?

Plus, new tariffs in the China trade war, as both sides dare the other to blink. Could the economic effects imperil Trump's re-election effort?

And the 2020 Democrats look to shrink Joe Biden's big early lead - and make guns a campaign issue in 2020.

Today's panel: Julie Pace from the Associated Press, the Wall Street Journal's Michael Bender, Politico's Laura Barrón-López, and CNN's Phil Mattingly. via Knit