“The magnitude of that decision is not lost on me, but I have a job to do”, Merchan added.
“Your continued wilful violations of orders of the court constitute a direct attack on rule of law, I cannot allow that to continue.”
Prosecutors last week argued that Trump had violated his gag order on another four occasions with “corrosive” and “insidious” attacks of witnesses and jurors.
Merchan found in the Republican frontrunner’s favour for his jibes against his former “fixer” Michael Cohen, claiming Trump had been responding to political attacks.
He also ruled that Trump’s comments that former tabloid boss David Pecker had been “very nice” – which the prosecution had argued was meant as a thinly veiled threat to witnesses to behave – did “not constitute a violation at all”.
But Merchan found Trump’s comments to Real America’s Voice about the jury called into question the “legitimacy” of the trial and “again raised the spectre of fear for the safety of the jurors and of their loved ones”.
Porn star payment allegation
Issuing his ruling on nine previous violations last week, Merchan had lamented the limited tools at his disposal to deter the defendant.
Criminal contempt is only punishable by a fine of up to US$1000 or by 30 days in prison for each violation.
Merchan said it would be “preferable” to impose a fine “more commensurate with the wealth of the contemnor”, such as a fine of up to US$150,000 per violation.
Trump is accused of 34 counts of falsifying business records to cover up reimbursing Cohen for an alleged US$130,000 hush money payment to porn star Stormy Daniels.
The former President has pleaded not guilty to all charges. He denies having a sexual relationship with Daniels. The trial continues.