The deal is being criticized by both Republicans and Democrats as fueling Russia's war against Ukraine, violating existing U.S. laws and drawing the U.S. closer to Russia.
Six Democratic and six Republican senators wrote a letter calling on President Trump to withdraw from his recent deal with Russian President Vladimir Putin.
President Donald Trump told reporters that officials "didn't like what we were reading" about Kimberly Guilfoyle, who resigned as ambassador to Greece on Tuesday.
Donald Trump's diesel fuel deal with Russian President Vladimir Putin has Republicans seeing red as they are forced to defend the deal ahead of the midterm elections.
A bipartisan group of senators urged President Trump to withdraw from his diesel deal with Russian President Vladimir Putin and rescind a move to waive sanctions on Russia's energy sector.