US President Barack Obama imposed the most sweeping immigration reform in a generation easing the threat of deportation for about 4.7 million undocumented migrants.
In a White House speech, Obama rejected Republican critics who say his decision to bypass Congress and take executive action is tantamount to an amnesty for immigrants who are in the US illegally.
Today, our immigration system is broken, and everybody knows it. It's been this way for decades. And for decades we haven't done much about it.
With 11 million undocumented migrants in the US, Obama's plan would let some 4.4 million who are parents of US citizens and legal permanent residents remain in America temporarily, without the threat of deportation.
Two people have been shot at the Florida State University campus in Tallahassee, a local hospital official said.
Campus police said the incident was ongoing but declined to provide more information, while the university urged people to seek shelter and remain indoors.
The Tallahassee Democrat newspaper reported that students said the shooting occurred at a library on campus.
"We have two victims from a shooting that happened on the Florida State University campus," said a nursing supervisor at the Tallahassee Memorial HealthCare hospital.
The supervisor declined to provide additional detail on the condition of the victims. It was not immediately if they were students.
A man has been arrested near the White House with a six-inch knife, rifle and ammunition.
Renae Kapheim, 41, was detained after approaching a Secret Service uniformed officer.
He allegedly told the officer "someone in Iowa told him to drive to the White House", Secret Service spokesman Brian Leary told NBC News.
The weapons were then found in his car.
Officials said Kapheim, of Iowa, was charged with having an unregistered firearm but further charges are pending.
The mass murderer Charles Manson is set to marry a 26-year-old woman who left her home and has spent the past nine years trying to help exonerate him.
Afton Elaine Burton, the bride-to-be, said she loves the man convicted of the notorious murders of seven people, including pregnant actress Sharon Tate.
No date has been set but a wedding coordinator has been assigned by the prison to handle the nuptials. The couple has until early February to get married before they would have to reapply.
Manson has been sentenced life and is imprisoned in Manson in California State Prison in America and is not eligible for parole until 2027.
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Air strikes by US-led forces in Syria have killed 865 people - including 50 civilians - since the start of the campaign against Islamic State in September, a group monitoring the war said.
The Britain-based Syrian Observatory for Human Rights said 746 of the deaths were Islamic State fighters, but suggested that the actual figure could be much higher.
Eight of the civilians were women and children, the group said.
Sixty-eight members of al-Qaeda-affiliated Nusra Front were also killed.