First U.S. detection of virulent H5N9 strain, at a California duck farm, draws scrutiny as evidence of genetic reassortment that could trigger human outbreaks.

California joined a coalition of U.S. states that sued to block President Donald Trump's move to end a decades-old immigration policy known as birthright citizenship guaranteeing that U.S.

Despite the president's pledge to withhold funds to the region, outside influences, including three global sporting events, could force his hand.

Calexit is a movement for the largest U.S. state to secede from the union, though the initiative's website offers contradictory definitions.

Trump has falsely claimed that Democratic Governor Gavin Newsom and other officials refused to provide water from the northern part of the state to fight the fires.

Firefighters from stations in western Washington have returned home after spending several weeks in Southern California assisting in the fight against wildfires

A new House bill would make it a federal crime to “cause a wildfire, further the spread of a wildfire, or attempt to do either,” according to the bill’s sponsors.

Some U.S. House Republicans in California are breaking with Speaker Mike Johnson over his suggestion that federal disaster aid be coupled with as-yet unspecified conditions on the wildfire-ravaged state.

A major political transition is taking place in Washington as Joe Biden prepares to leave the White House. After attending Donald Trump’s inauguration on Monday, Biden and his wife, Jill, will board a flight to California,

Border officials say the attack bolsters President Donald Trump’s claims that the U.S.-Mexico border is more lawless than official statistics indicate.

California Republicans are making the trip to our nation's capital to watch the inauguration ceremonies. Festivities and security measures are underway as President-elect Donald Trump gets ready for his second inauguration.

The former vice president’s first acts as a nonelected official for the first time in decades could be a sign of what comes next.