Welcome to the CNN Political Briefing. Today, CNN's Political Director David Chalian breaks down the first ever virtual Democratic Convention kicking off, and what to look for the rest of this week. Plus, Speaker Pelosi takes action to protect the post office and President Trump is doing some serious counter programming this weekTo learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices