State Attorney General Kamala Harris waded into the immigration debate, telling local law enforcement Tuesday that they have the power to ignore Obama administration requests that they hold illegal immigrants. By issuing a bulletin to local police and sheriffs, Harris is challenging President Barack Obama, her friend and ally. She campaigned for him four years ago and again this year, and he campaigned for her when she won election in 2010. Harris also is a savvy politician who knows how to count. Latinos probably will support her stand, and they made up more than 20 percent of the California electorate last month. Harris’ position undermines Obama’s Se Communities program, which has led to the deportation of 1.4 million illegal immigrants, many of whom broke no laws but for their undocumented immigration status.