Twenty-nine Republican lawmakers have co-sponsored a resolution that seeks to ban gay marriage in Pennsylvania.

On Tuesday, Pennsylvania State Representative Daryl Metcalfe reintroduced a constitutional amendment which seeks to define marriage as a heterosexual union.

“Pennsylvania does not need to wait for the United States Supreme Court to rule on what natural law already declares as self-evident,” Metcalfe said in a statement. “Marriage is a sacred bond that can only be fulfilled by one man and one woman, as established by God. Final passage of my legislation will allow state lawmakers to exercise their rightful responsibility and obligation to uphold the rule of law and the will of the people.”

“The definition of marriage as 'the union of one man and one woman,' defended and upheld by this legislation, is the traditional definition of marriage that has been recognized and accepted throughout history and the world for centuries. Neither homosexual special interests gathered under the immoral umbrella of the ACLU, nor the Obama administration's Department of Justice or any activist court should decide this critical issue for our commonwealth,” he added.

House Bill 1349 has been assigned to the House State Government Committee, which Metcalfe chairs.

Citing a large number of amendments attached to the bill, Metcalfe put off debate on the measure last year.

The Philadelphia Gay News reported that the measure has lost significant support when compared to last year's version, which was introduced with 35 co-sponsors.

The measure requires approval from two consecutive sessions of the state legislature before seeking voter approval. The earliest it could reach the ballot box is 2015.

(Related: Pennsylvania Democrat seeks civil unions for gay couples.)