South Carolina Sen. Lindsey Graham has some advice for President Donald Trump: Stop tweeting about the Russia investigation.

The Republican senator said Sunday that Trump should stop publicly commenting on the investigation following the President’s firing of former FBI Director James Comey, which he subsequently tweeted about throughout the week.

“The President needs to back off here and let the investigation go forward,” Graham said.

“I would advise the President not to tweet or comment about the investigation as we go forward,” he added.

Trump has repeatedly tweeted about the ongoing investigation into Russian interference in the 2016 presidential race — notably since he fired Comey,…