President Joe Biden’s choice to direct the White House Office of Management and Budget told senators during a confirmation hearing on Tuesday that she regrets launching attacks against some of them on Twitter. Neera Tanden, the nominee, once wrote that Sen. Susan Collins (R-Maine) is “the worst,” that Sen. Tom Cotton (R-Ark.) is “a fraud” and that “vampires have more heart” than Sen. Ted Cruz. (R-Texas). Tanden deleted more than 1,000 posts after the November 2020 election. “Senator, I appreciate people’s concerns about my tweets and I’ve regretted them. And I deleted tweets because I’ve regretted my tone and I’ve deleted tweets over many months,” the president of the Center for American Progress said. “But for those concerned about my rhetoric and my language, you know, I’m sorry. And I’m sorry for any hurt that they’ve caused.” Tanden declined to say whether she deleted the posts because she thought being …