Text: Although there are still some legal hoops to jump through, marriage would enable the same-sex partner of a U.S. citizen to avoid the very lengthy (and frequently unsuccessful) application process for citizenship.
Entailment: There are still some legal hoops to jump through, but marriage would allow the U.S. citizen to avoid a very lenghty application process for citizenship.
Contradiction: There are still some legal hoops to jump through, but marriage would not allow the U.S. citizen to avoid a very lenghty application process for citizenship.