Paul Waldman: Democrats’ new argument for why they should be in charge: ‘Corruption’

For some time, Democrats have struggled to come up with a way to tap into anger at President Donald Trump without appearing as though they have no argument beyond personal disgust with the president. They want to find a campaign theme that can fully exploit his unpopularity but is also a substantive critique that points toward actions they will take if they're able to win control of Congress this year and the White House in 2020.One idea that they have been toying with is a renewal of the theme