I have extracted the portion of the linked article when Cohen tried (as Trump's attorney) to prevent Daniels from obtaining qualified legal representation. At the minimum, it seems to me that this act should disbar Cohen, and more specifically, I think that when Mueller interviews Trump that Mueller should ask if Cohen was acting under his directions, in an attempt to silence her beyond the illegal 2016 NDA (which broke the campaign donation rules):
Title: "Stormy Daniels sues Trump lawyer, says he defamed her, broke campaign finance law"
https://www.nbcnews.com/news/us-news/stormy-daniels-lawyer-email-shows-cohen-tried-keep-me-case-n860156Extract: "Both the White House and Trump have sought to distance the president from the 2016 agreement and subsequent attempts to enforce it.
But Clifford's lawyer, Michael Avenatti, says a recent email — which he obtained and provided to NBC News — holds proof that Trump was involved.
Cohen sent the Feb. 22 email to Keith Davidson, the lawyer who represented Clifford when she signed the hush agreement.
"It is my understanding that Ms. Clifford has or is seeking the advice of additional counsel regarding the above matter," Cohen wrote.
The "above matter" was outlined in the subject line: "PP -vs- DD NDA" — shorthand for the agreement between "Peggy Peterson" and "David Dennison," which Avenatti says are aliases for Clifford and Trump.
The email went on to say that an exhibit to the agreement that discloses their identities "is deemed Attorneys Eyes Only; specifically naming only you and I."
"Under no circumstances should you forward this document or the exhibits to anyone without my express written consent," Cohen added.
He signed the email: "Michael D. Cohen, Esq., Personal Attorney to President Donald J. Trump."
Avenatti said the email also shows that "as late as one month ago, Cohen was continuing to take steps to prevent my client from getting a new attorney to help her exercise her rights."
And, he added, "Cohen was acting as counsel to Mr. Trump when he was attempting to silence her.""