Subject to subsection (b), no duty-free treatment or other preferential treatment extended to beneficiary countries under this chapter shall remain in effect after June 30, 2007.

Duty-free treatment and other preferential treatment under this chapter shall remain in effect with respect to a beneficiary country, during the period beginning on July 1, 2007, and ending on December 31, 2007, only if on or before June 30, 2007—