President Joe Biden finally addressed the nation publicly for the first time Wednesday since abruptly dropping out of the presidential race four days earlier. While being out of the public eye since July 17 due to a COVID-19 diagnosis, Biden wrote a letter, posted Sunday to Twitter, announcing that he would be dropping out of the presidential race. The 81-year-old president was seen publicly for the first time Tuesday since July 17, dodging questions about his decision to drop out. Biden, giving the fourth Oval Office address of his presidency, said he dropped out for the sake of “unity,” whil…