Trump’s as mad as hell…

… and he’s not going to take it anymore!

Witch hunt Mueller’s threat to subpoena the President in the bogus, biased Russian collusion probe has incited Trump’s fighting instinct.

“His instinct is always to be on the offensive,” said a Trump insider, as reported by Axios. “This was a wake-up call to the president that will embolden him. As he sees this becoming more serious, his instinct is to punch back ten times harder.”

Mueller told the President’s lawyers that if Trump doesn’t agree to an interview to answer a long list questions (the list was leaked to the mainstream media last week), Mueller would issue a subpoena for the president to appear before a grand jury.

“For the average human, nothing scares them more than legal issues,” said the insider, according to Axios. “He. Does. Not. Care. His whole adult life has been spent in litigation. He’s not afraid of high-stakes legal stuff. He’s just going to start swinging and knock people’s heads off.”

The risks are too high for Trump to submit to an interview, reported Axios, quoting law professor and former White House counsel Robert Bauer.

The list of questions is extremely threatening, he said. Some of the questions have no safe answer.