 I'm Linda Kenyon. The Biden administration and the campaign continue to push back on calls from Democrats who are concerned the president will be able to defeat former President Trump. Meanwhile, Biden is stepping up his reelection activities. Here's CBS's Natalie Brand. His campaign is touting an aggressive next phase with more travel, interviews and what they're calling off the cuff moments. But already there's new controversy over two recent radio interviews in which questions were provided in advance.