Trump-Biden transition live updates: Trump impeached for 2nd time

Live updates during the transition from the Trump to Biden administrations -- and from the second Trump impeachment.

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NEW: With Pres. Trump facing a Senate trial as soon as next week, he has no organized defense team as his top lawyers have refused to represent him.

Live updates during the transition from the Trump to Biden administrations -- and from the second Trump impeachment.

National Mall to be closed on Inauguration DayThe entire National Mall will be closed to the public for Inauguration Day amid security concerns, ABC News has confirmed.The Washington Post was the first toreporton the development.Traditionally, members of the public gather on the National Mall -- bookended by the Capitol building and Lincoln Memorial -- for viewing of the inauguration on large jumbotrons.

Ex-Michigan health chief charged with manslaughter in Flint Australia to kill pigeon that crossed Pacific from Oregon Illusionist Siegfried Fischbacher of Siegfried & Roy dies

But the Mall's imminent closure comes in the wake of a violent seige on the U.S. Capitol building last week, which left at least five people dead, and amidregarding armed protests being planned ahead of Biden's inauguration on Jan. 20.Saul Loeb/AFP via Getty Images

Members of the National Guard rest in the Capitol Visitors Center, Jan. 13, 2021, in Washington, D.C., ahead of an expected House vote on impeaching President Donald Trump for a second time.Security preparations for next week have already increased with up to headtopics.com

20,000 National Guard troopsauthorized to provide security at the Capitol and around Washington, D.C., for next week's ceremony, according to a Defense Department official. Read more: ABC News »

NASA Missions Help Investigate an ‘Old Faithful’ Active Galaxy

Yellowstone National Park's Old Faithful geyser regularly blasts a jet of boiling water high in the air. Now, an international team of astronomers has discovered a cosmic equivalent, a distant galaxy that erupts roughly every 114 days.