Transcript for Biden picks Harris as running mate, spars with Trump over masks, mail-in voting
I'm ABC's rate climate the latest in politics this week. At last the democratic ticket reveal. Former vice president Joseph Biden turned to senator Kyle Harris the service is number two former prosecutor quickly making her case. Let me tell you as somebody who has presented my fair share of arguments in court. The case against Donald Trump and Mike Pence. Is open and shut us. Harris is the first black woman and the first Asian American to ever appear on a presidential take. Biden's seat the elevation of Paris was sent a powerful message to little girls collar. Today just maybe. Their seeing themselves. For the first time and do away. As the stuff of president. And vice president. Applicants have offered some conflicting messaging welcoming Harris of the race. For president company results immediately focus on her clashes with bite back when they were democratic primary opponent. It's there was nobody more insulting to Biden. Then she was she said horrible things about him. Biden tussle this week with the president in calling on all governors to mandate the wearing masks to combat Covert nineteen. Every single American. Should be wearing a mask when there are outside. For the next three months and the middle. Governors want to do the right thing. To make the Smart decisions and Joseph doesn't. Perhaps the most consequential night of the week was over the Postal Service the president acknowledging that millions more to handle the influx of mail in votes expected. But he's holding up efforts to get that money approved if. The bill isn't gonna get done that would mean to post offices are going to get funded. So I don't know how you could possibly use these ballots these mail in ballots. Next up the Democratic National Convention but it's gonna look and feel like no convention that's come before. Everything all of the speakers including Joseph Biden Connell Harris will be virtual with virtually no business left to conduct in Milwaukee. Rick Klein ABC news Washington.
This transcript has been automatically generated and may not be 100% accurate.