STORY HIGHLIGHTS
Washington (CNN) -- President Barack Obama is ordering the most sweeping overhaul of the immigration system in decades, despite Republican claims he is acting illegally by moving unilaterally to shield five million undocumented immigrants.
Obama rejected accusations by conservatives that he is offering a free pass to undocumented immigrants and warned in a prime-time address that he would bolster border security and make it harder for unauthorized outsiders to get into the country.
"Today our immigration system is broken and everybody knows it," Obama said. "It's been this way for decades and for decades we haven't done much about it."
Obama is pressing ahead and making broad changes to the immigration system without the consent of Congress, which has failed to pass a comprehensive reform bill. The announcement prompted an angry response from House Speaker John Boehner.
To those members of Congress who question my authority to make our immigration system work better... I have one answer: Pass a bill. Barack Obama
"By ignoring the will of the American people, President Obama has cemented his legacy of lawlessness and squandered what little credibility he had left," Boehner said. "Republicans are left with the serious responsibility of upholding our oath of office."
A key element of Obama's plan is to instruct immigration authorities to target those undocumented immigrants who are dangerous rather than law-abiding undocumented parents of U.S. citizens and residents and others.
He said they will go after "felons, not families. Criminals, not children. Gang members, not a Mom who's working hard to provide for her kids."
"We'll prioritize, just like law enforcement does every day," he said.
More here:
Obama: 'Come out of the shadows'