Adding Cosponsors

Cosponsors to an amendment must be added through a formal letter submitted by the office of the member sponsoring the amendment.  The letter should be written on Congressional letterhead, detail the number of the amendment(s), the names of the members wishing to cosponsor the amendment(s), the underlying legislation, and should include the sponsoring Member’s signature.

The Cosponsorship Letter should be delivered either by hand to the Committee on Rules in H-312, The Capitol, or as a PDF via e-mail to  If submitted via e-mail, please call the Committee on Rules at x5-9091 and provide verbal notice of your electronic submission.

A template for a cosponsor letter can be found here