“If these allegations are true, they are beyond outrageous,” Boxer, D-Calif., said in a statement.
Yee’s defense attorney, Paul DeMeester, has announced that Yee was withdrawing his candidacy for secretary of state, but declined to comment on the criminal case or on whether Yee would resign his Senate post.
Yee, 65, a Democrat who represents the western half of San Francisco and most of San Mateo County, was arrested by the FBI on Wednesday on seven felony charges.
In a criminal complaint filed in U.S. District Court in San Francisco on Monday and unsealed Wednesday, Yee is charged with six counts of scheming to defraud citizens by allegedly soliciting and accepting campaign contributions. He is one of 26 people named in the complaint.