; and (2) to prevent the entry into or flow or movement in commerce of, or the burdening of commerce by, any such product that is determined to be so adulterated. . 4. Regulations; effective date (a) Regulations Not later than 18 months after the date of the enactment of this Act, the Secretary of Agriculture shall issue regulations to carry out the amendments made by this Act. (b) Effective date The amendments made by this Act shall apply with respect to meat and meat food products, poultry and poultry products, and eggs and egg products entering into interstate or foreign commerce on or after the date of the enactment of this Act.