President Obama and leaders in Congress are vowing to pass immigration reform in 2013, but getting a bill to pass the House and Senate will be extremely difficult.

Tuesday’s election has significantly improved the prospects of immigration reform, which hasn’t come close to becoming law since George W. Bush’s administration.

The following is The Hill’s list of 10 players to watch on immigration reform.

President Obama. Even before he was elected to a second term, Obama had already been laying the groundwork for immigration reform. Over the summer, he issued a new directive protecting immigrants who came to the country illegally from being deported provided they meet certain criteria. After failing to pass a bill in his first four years, Obama said that immigration reform would be one of the highest priorities of his second term. But will he push a comprehensive approach, or a scaled-down version of the measure, such as the Development, Relief and Education for Alien Minors (DREAM) Act?