President Joe Biden’s Cabinet is nearly complete with the confirmation of Labor Secretary Marty Walsh on Monday. But the work of building his administration is just beginning, as Biden has hundreds of key presidential appointments to make to fill out the federal government. Of the 790 being tracked by the Partnership for Public Service, a nonpartisan good-government group, 23 appointees have been confirmed by the Senate, 39 are being considered by the Senate, and 466 positions have no named nominee.