President Joe Biden cracked jokes before more than 2,000 guests on Saturday at the revived White House Correspondents’ Dinner as D.C.’s highest-profile annual party returned after two years of Covid-19 restrictions. “Special thanks to the 42 percent of you that actually applauded,” Biden said as he took the stage. “I’m really excited to be here tonight with the only group of Americans with a lower approval rating than I have.” The president threw some punches at one of his favorite targets: former President Donald Trump. He noted it was the first time a president had attended the dinner in six…