Polls show Obama enjoys up to a 3-to-1 advantage over Romney among Hispanic voters.
Romney has worked to make the case that immigration is not the only issue that Hispanics care about, contending that his plans to improve the economy would benefit Latinos as well as other Americans.
But immigration has often been at the center of the campaign. Even before the Supreme Court's ruling, Obama announced on June 15 a surprise policy change that will allow hundreds of thousands of illegal immigrants brought into the United States as children to avoid being shipped home.
Seeking to appeal to his party's right wing, Romney took a hard line against illegal immigration during the Republican primary elections, including saying he felt the Arizona law would be a good model for the country as a whole. He has not offered a detailed immigration plan of his own.
-Reuters
