A coalition of states, including New York, California, Illinois, New Jersey, Rhode Island and Massachusetts, are expected to file the challenge later on Tuesday in the Southern District of New York.

The Delaware Department of Justice is joining 17 states in suing the Trump administration for its order ending birthright citizenship.

Scenes of immigration authorities detaining migrants Thursday have rattled some residents in cities like Newark, Boston and New York City

American Airlines and JetBlue have agreed to pay a group of U.S. states nearly $2 million in legal fees after the states won a trial challenging the airlines' now-blocked U.S. Northeast partnership.

Dr. Pavel Kots, assistant professor, Department of Chemical and Biomolecular Engineering at the New York University Tandon School of Engineering, will give a seminar titled, "Repurposing Old Catalytic Chemistry to Solve Sustainability Challenges and Transform Plastic Waste to Value."

Until the order, which Trump signed the same day he was inaugurated as the 47th president, the U.S. government has, at least the late 1800s, considered the child of any immigrant born on U.S. soil an automatic citizen, even to a mother in the United States illegally.

A state lawmaker is turning to the new president for action on a posthumous pardon request.

Trump's executive order is "flagrantly unlawful," attorneys for multiple states, including New Jersey and Delaware, said in a lawsuit.

A bipartisan coalition of states has reached a $7.4 billion settlement in principle with members of the Sackler family and their former company Purdue Pharma over their role in the opioid crisis.

Climate change is in the headlines. From the chill of northern Alaska to the heat of Arizona, here are the coldest and warmest cities in each U.S. state.

Attorneys general in 18 states sued Tuesday to block the order, saying birthright citizenship cannot be undone with the stroke of the president’s pen.

If you're dreaming of warmer weather, check out these seaside spots, from Kiawah Island in South Carolina to Kā'anapali Beach in Hawaii.