Jeff Sessions is pushing back at President Donald Trump's criticisms. Sessions is running for the GOP nomination for his old U.S. Senate seat. Trump has voiced disapproval on Session's recusal in the Russia investigation when he was attorney general. Sessions responded to Trump, by tweeting that the president was "damn fortunate" that he recused himself as required by law. Sessions says it protected the rule of law and resulted in Trump's exoneration. Sessions was Trump's first attorney general, a position he was forced to resign when his recusal from the Russia inquiry prompted a fallout with Trump. Trump fired back Saturday evening, tweeting that Sessions should "drop out of the race." Trump has endorsed former Auburn University football coach Tommy Tuberville.