Friday on Political Rewind: The GOP field grows as Tim Scott and Ron DeSantis announce their campaigns for the White House. Meanwhile, President Biden leads in a new CNN poll, but his approval numbers continue to drop. And the Supreme Court strikes a blow to the EPA with its ruling on the Clean Water Act.\n\nThe panel: \nMayor Deana Holiday Ingraham, East Point, @DeanaIngraham\nJim Galloway, former political columnist, The Atlanta Journal-Constitution, @JimJournalist\nLeo Smith, GOP political consultant & founder of Engaged Futures, @leosmithtweets\nMeg Kinnard, national politics reporter, Associated Press, @MegKinnardAP\n\nTimestamps: \n:00- Introductions \n4:00- East Point Mayor Deana Holiday Ingraham gives an update on her city \n7:00- South Carolina Sen. Tim Scott (R) launches his bid for president \n21:00- Florida Gov. Ron DeSantis (R) launches his bids for president\n36:00- President Biden wins in polls for re-election but his job approval rating has slumped\n45:00- The Supreme Court has narrowed the scope of the Clean Water Act \n\nMonday on Political Rewind: The Political Rewind team plans to observe Memorial Day. We'll be back live on the air Tuesday. You can catch up on episodes of Political Rewind at gpb.org.