But Bolton’s decision on complying with the inquiry is contingent on whether a constitutional court fight pans out in favor of the House or the Trump administration, the Post reported.

Bolton’s former deputy, Charles Kupperman, had been told by the Trump administration not to cooperate with the probe. But he was also subpoenaed by House Democrats to appear for a deposition. While other witnesses had chosen to defy the White House’s admonitions, Kupperman filed a lawsuit asking a judge to rule on which party has more authority.

House Intelligence Committee Chairman Adam Schiff, D-Calif., had warned that Kupperman may be held in contempt for defying the congressional subpoena for his testimony.

Bolton had reportedly been willing to testify in public under subpoena if Kupperman is directed by the courts to comply with the House, according to NBC News, citing a source familiar with Bolton’s situation.

But a House Intelligence Committee official said Thursday that Bolton’s lawyer would take the House panels conducting the probe to court if his client was subpoenaed.

WASHINGTON — Former national security adviser John Bolton failed to appear Thursday for his closed-door deposition in the House impeachment inquiry, following the lead of other current and former Trump administration officials who have chosen not to show up.

Last week, Bolton — who was fired by Trump in September — was formally invited to testify before the three congressional committees leading the inquiry, but his lawyer, Charles Cooper, quickly made clear that his client was unwilling to appear voluntarily.