Justice Department lawyers have joined President Trump in his efforts to keep his corporate and personal tax returns out of Manhattan District Attorney Cyrus Vance’s hands, according to a new court filing.

The DOJ argued there are “weighty constitutional issues involved,” and that Manhattan federal Judge Victor Marrero should grant Trump’s request to block subpoenas served on his accounting firm, Mazars USA.

Trump sued to block Vance’s office, arguing that a sitting president cannot be indicted.

Vance’s attorneys have argued that the case should be heard in state court, not federal court — but the DOJ Wednesday wrote that the issues should be determined by a federal judge.

Their court papers argued that staying the subpoena until Marrero is able to rule “will prevent irreparable harm to the President’s asserted constitutional interests in not having his records subjected to state criminal compulsory process in these circumstances.”

Lawyers for Vance and Trump previously agreed to delay the enforcement of the subpoenas until “1 p.m. two business days after the Court rules on the pending motions to dismiss and for injunctive relief, or until 1 p.m. on Monday, October 7, 2019, whichever is sooner.”

Vance’s office declined to comment on the filing.