; and (2) by adding at the end the following: (c) Enforcement of subpoenas by states A State may enforce compliance with a subpoena issued under subsection (a)— (1) as provided for under State law; and (2) by petitioning an appropriate United States district court for an order requiring compliance with the subpoena. . B Trade adjustment assistance for firms 1201. Petitions and determinations Section 251 of the Trade Act of 1974 ( 19 U.S.C. 2341 ) is amended— (1) in the second sentence of subsection (a), by striking Upon and inserting Not later than 15 days after