Gay groups react to the news that President Barack Obama is likely to nominate Chuck Hagel, a former senator from Nebraska and Vietnam veteran, for defense secretary.

Citing White House officials, the Los Angeles Times reported on Friday that the announcement could come as early as Monday.

Gay groups have criticized Hagel's views on gay rights.

One incident from 1998 has captured the most attention. In that year, then-Senator Hagel opposed James Hormel's nomination as U.S. ambassador to Luxembourg, saying Hormel was a bad fit because he's “openly, aggressively gay.”

Last month, Hagel, a Republican, apologized in a statement for the comments: “My comments 14 years ago in 1998 were insensitive. They do not reflect my views or the totality of my public record, and I apologize to Ambassador Hormel and any LGBT Americans who may question my commitment to their civil rights. I am fully supportive of 'open service' and committed to LGBT military families.”

The apology failed to mollify gay GOP group Log Cabin Republicans, which took out a full-page ad in The New York Times calling Hagel “wrong on gay rights.”

(Related: Chuck Hagel “wrong on gay rights,” gay GOP group says.)

Also not appeased was former Massachusetts Rep. Barney Frank. Frank argued that Hagel had a history of “aggressively bigoted opposition” to gay rights.

“He voted consistently against fairness for LGBT people and there does not seem to be any evidence prior to his effort to become Secretary of Defense of any apology or retraction of his attack on James Hormel,” Frank said.

The nation's leading group representing LGBT troops, OutServe-SLDN, said it accepted Hagel's apology but wanted to see concrete actions.

“It will now be incumbent upon him during the nomination and confirmation process to lay out demonstrable actions he will take to support that commitment [to LGBT troops and their families],” said Allyson Robinson, the group's executive director.