The leaders of the impeachment inquiry in the House have issued subpoenas to several members of the Trump administration—and the White House lawyer has told them not to comply. In our system of checks and balances, what power does Congress have to force them to comply? 'New York Times Magazine' staff writer Emily Bazelon says, "The question is, what it really means to be held in contempt of Congress these days." In the past, "Congress would hold you in contempt; they'd send the Sergeant at Arms to come arrest you and you could be jailed, but we haven't seen Congress take that kind of aggressive enforcement action since 1935."