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minutes. we will bring that to you when it begins. alabama governor kay ive tweeted, this morning, i agree with the people of dadeville and my fellow alabamians violent crime has no place i our state, and we are stayin closely updated by law enforcement has details emerge again, we are expecting a news conference momentarily and wil bring it to you as soon as i starts but for now we turn t the race for the 202 republican presidentia nomination as it gets going there is broader discussion underwa about what the future of the republican party will look like in a private retreated natio...

drugs. tough, new auto emission standards about to be announced, but will they push more americans to go electric a big upside of artificial intelligence, detecting cancer much earlier, and predicting when it might strike and the young, bold athletes sharing their culture and superstar tony hawk. >> announcer: this is "nbc nightly news" with lester holt >> welcome. once again, in the tragic aftermath of a mass shooting, we're getting a person look at pol risking their own lives to stop an active shooter late this afternoon, louisville police releasing body cam video of officers...

and then getting back up to reengage. officers being hailed as heroes for stopping him from killing more people. were there warning signs? and what his neighbors are saying. damage control. new revelations from the leaked classified intelligence documents, putting u.s. alliances in question. the manhattan district attorney sues a top house republican, claiming interference in the investigation of donald trump. the battle over an abortion pill. big pharma pushing back against a ruling, as some states start stockpiling drugs. tough new auto emission standards about to be announce...

transportation fund. he says he's reduced the deficit by 1.6 trillion, so there's room. >> to the companies running gas stations and setting those prices at the pump, this is a time of war. global peril. ukraine. these are not normal times. bring down the price you're charging at the pump to reflect the cost you're paying for the product. do it now. do it today. >> the president not changing any of his policies. the votes may not be in congress to do what he wants. >> i'm willing to embrace his proposals for a gas tax holiday. i don't know whether we'll get the votes it needs here in...

Is expected to roll out strict new emission standards that will require automakers to accelerate the transition from gas to electric. but are carmakers and drivers s ready? here is tom costello. >> reporter: they're among america's fastest selling cars. average price an eye -popping $58,000. electricic vehicles, evs, make up 7% of new car sales.s. now the biden administration wants to accelerate the green revolution with tougher emission standards, and industry sources say requiring that evs make up at least 54% of automakers' new car sales by 2030, two-thirds of sales by 2032. >> running on a...