; and (2) in subsection (h)— (A) by striking paragraph (2); (B) by redesignating paragraphs (3) through (7) as paragraphs (2) through (6), respectively; (C) in paragraph (3), as redesignated, by striking paragraph (3) and inserting paragraph (2) ; and (D) in paragraph (5), as redesignated, by striking paragraph (5) and inserting paragraph (4) . (b) Applicability The amendments made by this section shall not affect any action or proceeding commenced before and pending on the date of enactment of this Act. (c) Deadline for regulations The Federal Communications Commission shall prescribe regulations to implement the amendments made by this section not later than 270 days after the date of enactment of this Act. 3. Call authentication (a) Authentication framework (1) In general Subject to paragraph (2), the Federal Communications Commission shall require, not later than 18 months after the date of enactment of this Act, a provider of voice service to implement an appropriate and effective call authentication framework in the internet protocol networks of voice service providers. (2) Implementation The Federal Communications Commission— (A) shall not take the action described in subsection (a)(1) if the Federal Communications Commission determines, after public notice and an opportunity for comment, that each provider of voice services, not later than 12 months after the date of enactment of this Act— (i) has established voluntary rules for an appropriate and effective call authentication framework in the internet protocol networks of voice service providers; (ii) has agreed voluntarily to participate in the authentication framework under clause (i); (iii) has begun to implement the authentication framework under clause (i); and (iv) will fully implement the appropriate and effective call authentication framework under clause (i), not later than 18 months after the date of enactment of this Act, subject to subparagraph (B)