An email exchange between Senate Democratic leadership aides, obtained by Axios, reveals Sanders withheld his name from a joint statement declaring protesters who followed Sinema into a bathroom — and filmed her while using the restroom — as “plainly inappropriate and unacceptable.”

Sanders’ communications director Mike Casca asked that the statement be edited to include the preface, “While we hope Senator Sinema will change her position on prescription drug reform and support a major [budget] reconciliation bill, …”

An aide to Sen. Cory Booker (D-N.J.), who organized the statement, said Booker would not accept the edits.

Casca later replied: “Sanders will not be signing, so please cut ‘Senate Democratic Leadership Team’ from headline.”