-
Now Playing: SCOTUS to hear cases involving LGBTQ workplace discrimination
-
Now Playing: Plaintiff in SCOTUS LGBTQ discrimination case speaks out
-
Now Playing: Is Trump ready for his impeachment trial?
-
Now Playing: 'Momentum,' 'unifying message' is Biden's goal with inauguration: Rahm Emanuel
-
Now Playing: ABC's Pierre Thomas and Jonathan Karl on preparations for Biden's inauguration
-
Now Playing: Biden prepares for historic inauguration amid growing pandemic, protests
-
Now Playing: States enact their own security in preparation for pro-Trump demonstrations
-
Now Playing: Biden will work to 'try to turn the page' in inaugural address: Kate Bedingfield
-
Now Playing: Pennsylvania Lt. Governor speaks about heightened security in the state
-
Now Playing: The last few days have been 'absolutely gut-wrenching': Rep. Peter Meijer
-
Now Playing: Impeachment managers are 'ready to go when the trial does start': Rep Joaquin Castro
-
Now Playing: President Trump spends last weekend in the White House
-
Now Playing: Washington, DC preps for Biden inauguration
-
Now Playing: Biden introduces Dr. Maria Zuber
-
Now Playing: Biden introduces Dr. Frances H. Arnold
-
Now Playing: Members of Congress concerned for safety
-
Now Playing: Trump plans to leave White House with 'military-like feel'
-
Now Playing: Washington readies for inauguration as security concerns remain high
-
Now Playing: Inauguration security ramps up, over 300 people face charges in Capitol riot: Part 2
-
Now Playing: DC police officers recount violence, lawmakers demand Capitol security probe: Part 1