 Members of Congress are expecting the director of the Secret Service to answer questions. Next Monday, Kim Cheadle has agreed to appear. She says she's already beefed up Mr. Trump's detail. Investigators are talking with the shooter's neighbors in his hometown in Pennsylvania. This is ABC News. For more this morning, WTOP's Dimitri Sotis is joined by Axios politics reporter Julie Grace Bruchke to get her take on the first night of the convention this week and Mr. Trump's selection of J.D. Vance as his running mate.