Erica Orden writes:  The search to replace New York’s former top financial regulator,Benjamin Lawsky, has attracted the involvement of one of the banking industry’s harshest critics: U.S. Senator Elizabeth Warren (D., Mass.).

In recent weeks, Ms. Warren has placed calls to top staffers for New York Gov. Andrew Cuomo and others assigned to identify a successor to Mr. Lawsky, according to a person with direct knowledge of the search process. Ms. Warren’s advice: Tap Rohit Chopra, the student loan ombudsman and assistant director of the Consumer Financial Protection Bureau, which she helped start up and initially ran.

On Wednesday, the CFPB said Mr. Chopra would be leaving the bureau next week. Neither the bureau, nor Mr. Chopra, in a letter to the Treasury secretary, said what he planned to do next.

A spokeswoman for Ms. Warren didn’t comment on whether the senator has placed calls to the Cuomo administration or others on Mr. Chopra’s behalf, but pointed to a Facebook post from June 1 in which Ms. Warren endorsed the notion of Mr. Chopra succeeding Mr. Lawsky.

“He is smart as a whip, independent, hard-working, and loaded with integrity,” Ms. Warren wrote. “The New York banking superintendent is an important overseer of Wall Street, and I think Rohit would be phenomenal in that role.”