President Barack Obama eased enforcement of immigration laws Friday, offering a chance for hundreds of thousands of illegal immigrants to stay in the country and work. Immediately embraced by Hispanics, the extraordinary step touched off an election-year confrontation with congressional Republicans.

"Let's be clear, this is not amnesty, this is not immunity, this is not a path to citizenship, this is not a permanent fix," Obama said from the White House Rose Garden. "This is the right thing to do."

The policy change will affect as many as 800,000 immigrants who have lived in fear of deportation. It bypasses Congress and partially achieves the goals of the "DREAM Act," congressional legislation that would establish a path toward citizenship for young people who came to the United States illegally but who attend college or join the military.

Under the administration plan, illegal immigrants