- President Obama will announce an overhaul of immigration rules during a Thursday night address
- Obama will follow the announcement with a speech detailing his plan Friday in Las Vegas
- Obama invited top Democratic lawmakers to the White House for a Wednesday night dinner
- Republicans have warned that Obama's executive order could stall all legislative work
Washington (CNN)President Barack Obama will unveil his long-awaited immigration plan Thursday evening, changing rules governing deportations that could affect millions of undocumented immigrants and setting off an explosive battle with Republicans.