1. Short title This Act may be cited as the Broadband Resiliency and Flexible Investment Act . 2. Requests for modification of certain existing wireless and telecommunications service facilities (a) In general Section 6409(a) of the Middle Class Tax Relief and Job Creation Act of 2012 ( 47 U.S.C. 1455(a) ) is amended— (1) in paragraph (1), by striking a State or local government and all that follows and inserting the following: a State or local government or instrumentality thereof may not deny, and shall approve— (A) any eligible facilities request for a modification of an existing wireless tower, base station, or eligible support structure that does not substantially change the physical dimensions of such wireless tower, base station, or eligible support structure; and (B) any eligible telecommunications facilities request for a modification of an existing telecommunications service facility in or on eligible support infrastructure that does not substantially change the physical dimensions of such facility.