; and (2) the license is for purposes of operating a facility for dogs at a location that such person has used as a facility for dogs. . (c) Revocation of improperly granted licenses Section 19 of the Animal Welfare Act ( 7 U.S.C. 2149 ) is amended by adding at the end the following: (e) Revocation of improperly granted licenses The Secretary shall revoke a license issued after the date of the enactment of this subsection if the Secretary subsequently determines that, at the time of issuance, the issuance of the license violated section 3 of this Act. . 3. Regulations The Secretary of Agriculture may prescribe such regulations as the Secretary determines to be necessary to implement the amendments made by this Act. Any such regulations shall be prescribed not later than one year after the date of the enactment of this Act.