Whether habeas corpus petitioners have been afforded the opportunity for full and fair litigation of their Fourth Amendment claim

QUESTION PRESENTED FOR REVIEW The question presented is: : Whather habeas corpus petitioners ~who received a decision contrary to clearly established federal law on their Fourth Amendment claim at trial and or on-direct appeal ~ has been afforded the opportunity for full and fair litigation of their claim within the meaning of Stone v. Powell, 428 U.S. 465 (1976)?