President Joe Biden is embarking on the most consequential weekend of his political career, knowing that he must restore the faith of voters, donors, and party officials deeply skeptical of his acuity — and that any misstep will prove fatal to his reelection campaign. Listen to analysis on Bloomberg Surveillance with Tom Keene and Paul Sweeney. Tom and Paul get the view from Robert Costa, this week's host of CBS' Face the Nation, Joe Mathieu, host of Bloomberg's Balance of Power, and  Terry Haines, founder of Pangaea Policy.