President Joe Biden is fighting to save his endangered reelection effort as he holds a rally in Wisconsin and sits down for a network television interview there. He defiantly declared that "I'm staying in the race" during the campaign rally in the critical battleground state. His every answer in the TV interview with ABC's George Stephanopoulos is sure to be scrutinized for evidence of his competency and fitness to run for office. The questioning is expected to be intensive and probing, and Biden's team says he's been preparing aggressively. Meanwhile, his reelection campaign is pairing his in-person events with a fresh $50 million ad campaign this month.