The president has started a steroid and his doctor acknowledges that Trump has in fact received supplemental oxygen. His course of treatment suggests a severe case of Covid-19, though his team suggests he could be back at the White House as soon as tomorrow.This episode: campaign correspondent Scott Detrow, science correspondent Richard Harris, and national political correspondent Mara Liasson. Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.org.Join the NPR Politics Podcast Facebook Group.Listen to our playlist The NPR Politics Daily Workout.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.