Two new national polls reveal more warning signs for President Biden’s reelection bid. The NBC News poll and ABC News/Washington Post poll both show overwhelming majorities of Americans expressing concern about the president. His job approval is low in both surveys with respondents unhappy about the economy and immigration and Mr. Biden’s age. In head-to-head matchups, Joe Biden and Donald Trump are tied in the NBC poll, but the ABC/Washington Post poll shows Trump with a 9 point lead over the president.