Indiana University on Monday announced its opposition to a proposed gay marriage ban in Indiana.

Michael A. McRobbie, the president of Indiana University, said the constitutional amendment could hurt the state's ability to attract talent.

“As a major employer in the state, IU competes with universities and companies around the world for the very best talent, and HJR6 would needlessly add challenges to our ability to attract employees to our campuses around the state,” McRobbie said in a statement.

Megan Robertson, campaign manager of Freedom Indiana, the coalition of groups working against passage of the amendment, said her group “could not be more excited to welcome them to the Freedom Indiana family.”

“As President McRobbie said, this amendment sends a powerfully negative message that Indiana is not welcoming to people of all backgrounds and beliefs, and we know that's an image we can't afford to project as a state if we want to keep our college graduates here and recruit top talent from elsewhere,” Robertson said.

Republican lawmakers, including Governor Mike Pence, are pushing for House Joint Resolution 6 (HJR-6) to be on next year's ballot. The measure seeks to define marriage as a heterosexual union and prohibit civil unions as an alternative to marriage. It sailed through the Republican-controlled General Assembly in 2011. A needed second vote is expected to take place early next year.

A December, 2012 WISH-TV/Ball State University Hoosier Survey found only 38 percent of respondents support the amendment.

(Related: Indiana: Majority oppose proposed gay marriage ban.)