Los Angeles Mayor Antonio Villaraigosa delivered a high-profile speech in the nation's capital Monday in support of overhauling immigration laws but sidestepped questions about his future once his mayoral term ends.

"I'm focused on the job I've got and want to finish as strong as I can," he told a National Press Club audience. When asked whether he would serve in the Obama administration after his term ends June 30, he said, "When I'm asked, I'll answer the question.

"The sun may be setting on my administration, but I'm not riding off into the sunset just yet," Villaraigosa said. He is due to return to Washington at the end of the week for a news conference with other mayors calling for tougher gun laws.