A lawyer convicted of conspiring to commit asylum fraud is entitled to a hearing on his allegation that prosecutors offered undisclosed benefits to certain witnesses in exchange for their testimony, a federal judge held.In a written opinion last week, U.S. District Judge Matthew F. Kennelly did not rule on Robert W. DeKelaita’s request that his conviction be set aside.But Kennelly found DeKelaita had stated a plausible basis for exploring his contention that his right to due process was violated.DeKelaita alleges …