President Donald Trump may soon have reason to regret his habit of speaking off the cuff on matters he knows little about.

James Wolfe, a former Senate staffer who has been charged with lying to the FBI, filed a motion Tuesday to block Trump and Justice Department officials from speaking about his case. Trump's recent comments to reporters, Wofle believes, have already served to bias opinion against Wolfe.

"[Highly] prejudicial public comments already made by President Donald J. Trump and senior Justice Department officials have threatened Mr. Wolfe’s right to a fair trial under the Sixth Amendment, and must be prevented in the future," Wolfe's lawyers wrote.

Trump called Wolfe a "very important leaker" and said his arrest "could be a terrific thing" after the charges were brought.

However, Wolfe has not been charged with leaking, only with lying to the FBI. 

Trump's loose-lipped statements have come back to haunt him in other legal cases. For example, his comments about a "Muslim ban" during the campaign have dogged his legal defense of the travel ban launched in the early days of his presidency.