Louise Schiavone

Live from NPR News in Washington, I'm Louise Schiavone.

Another deadly shooting involving federal immigration agents took place this morning in Minneapolis.

The Department of Homeland Security says the person approached Border Patrol officers with a 9mm semi-automatic handgun and an agent fired defensive shots.

Here's what Minneapolis Police Chief Brian O'Hara says.

The circumstances are still under investigation.

DHS says the operation that led to the shooting had targeted an undocumented person wanted for assault.

Travel disruptions are already in gear as a major winter storm system makes its way across the nation.

U.S.

airlines have canceled almost 10,000 flights.

Most airlines waived rebooking fees during the storm and urged passengers to change their plans.

On the ground, travel of all kind is bound to be seriously hampered.

More than a dozen governors from Texas to New York

have declared states of emergency.

The winter storm is pushing natural gas prices up sharply, with prices rising more than 50 percent this week.

The expected cold weather could also disrupt supplies of gasoline.

NPR's Camilla Dominovsky reports.

Two high-profile Texas Democrats are going head-to-head for their party nod in the next U.S.

Senate race.

Congresswoman Jasmine Crockett and State Representative James Tallarico face off in debate tonight.

Here's the Texas newsroom's Blaise Gainey.