New York Congressman Jerrold Nadler on Thursday will reintroduce his Uniting American Families Act (UAFA).

The UAFA would allow gay Americans to sponsor an immigrant partner for citizenship. Currently, the Defense of Marriage Act (DOMA), the Clinton-era law that bans federal recognition of the marriages of gay and lesbian couples, blocks such a sponsorship.

Democrats have continued to repackage the UAFA – at times tucking it inside other immigration reform proposals – but the legislation has yet to gain sufficient momentum.

Two out of the four openly gay House members – Tammy Baldwin of Wisconsin and Jared Polis of Colorado – are expected at Thursday's event, which is scheduled to take place at the House Triangle at 1PM.

Opponents of the proposal say it would create a back door to gay marriage.

“It tries to redefine traditional marriage,” Utah Representative Jason Chaffetz told Fox News last year. “I can't support that.”

The United States Conference of Catholic Bishops railed against including gay families in immigration reform when California Representative Mike Honda attached the UAFA as part of his comprehensive immigration reform package.

“[Including the gay provisions in the immigration bill] would erode the institution of marriage and family by according marriage like benefits to same-sex relationships, a position that is contrary to the very nature of marriage, which pre-dates the church and the state,” the bishops wrote in a letter to Honda.

Nadler is also the primary sponsor of a bill that would repeal DOMA.