Republican Devin Nunes to leave Congress and run Trump’s social media venture – as it happened

• Nunes has claimed without evidence that social media companies try to censor Republicans
• Justice department closes Emmett Till's murder investigation
• White House confirms diplomatic boycott of Beijing Winter Olympics
• Congress braces for another battle over the US debt ceiling
• Former senator David Perdue enters Georgia gubernatorial race
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The Senate majority leader, Chuck Schumer, has teed up a big couple of weeks in the chamber with a statement about Joe Biden's Build Back Better Act, the $2tn package of domestic spending priorities which passed the House after a lengthy wrangle and must now survive the Senate.

Our goal in the Senate is to pass the legislation before Christmas and get it to the president's desk," he said this morning.