海口经食道心脏超声检查（TEE、TTE）模拟系统(商洛骨发生模型) (今日更新中)

A subtle design feature of the AR-15 rifle has raised a technical legal question that is derailing cases against people who are charged with illegally buying and selling the gun’s parts or building the weapon.At issue is whether a key piece of one of America’s most popular firearms meets the definition of a gun that prosecutors have long relied on.For decades, the federal government has treated a mechanism called the lower receiver as the essential piece of the semiautomatic rifle, which has been used in some of the nation’s deadliest mass shootings. Prosecutors regularly bring charges based on that specific part.But some defense attorneys have recently argued that the part alone does not meet the definition in the law. Federal law enforcement officials, who have long been concerned about the discrepancy, are increasingly worried that it could hinder some criminal prosecutions and undermine firearms regulations nationwide.“Now the cat is out of the bag, so I think you’ll see more of this going on,” said Stephen Halbrook, an attorney who has written books on gun law and history. “Basically, the government has gotten away with this for a long time.”Cases involving lower receivers represent a small fraction of the thousands of federal gun charges filed each year. But the loophole has allowed some people accused of illegally selling or possessing the parts, including convicted felons, to escape prosecution. The issue also complicates efforts to address so-called ghost guns, which are largely untraceable because they are assembled from parts.Since 2016, at least five defendants have challenged the government and succeeded in getting some charges dropped, avoiding prison or seeing their cases dismissed entirely. Three judges have rejected the government’s interpretation of the law, despite dire warnings from prosecutors.Federal 1866

A shopping trip for school supplies at a Texas Walmart ended in tragedy for a mother who was fatally shot while shielding her infant son from gunfire, her aunt told CNN.Jordan Anchondo and her husband were shopping for school supplies after dropping off their daughter at cheer practice when a gunman opened fire in an El Paso shopping center, Elizabeth Terry told CNN on Sunday.The mother of three later died at a hospital after using her body to protect her 2-month-old son, Terry said.Her husband, Andre, is still missing, the aunt said."How do parents go school shopping and then die shielding their baby from bullets?" Terry said."The baby still had her blood on him. You watch these things and see these things and you never think this is going to happen to your family."Anchondo was one of at least 20 people killed after the gunman opened fire Saturday in what authorities are calling an act of domestic terrorism. It was the third mass shooting in the United States in a week -- and less than 24 hours later another deadly shooting spree in Dayton, Ohio, left nine dead.Families are still trying to identify loved ones.The baby was "pulled from under her body," said Terry, the sister of Anchondo's father, Paul, for whom the injured infant is named.The infant suffered broken fingers and is due to undergo an MRI, said Terry, who traveled from Sacramento after the shooting to be with her family in El Paso."My brother is devastated. We are just hoping and praying we find Andre alive. Any little hope that we can hold on to, that's what we are doing," Terry said.The first call of an active shooter went out at 10:39 a.m. local time, El Paso Police Chief Greg Allen said. Around 2 p.m., Anchondo's relatives started calling each other, saying the couple was not answering their phones, Terry said.She died alone at the hospital because no one was able to immediately find her, her aunt said."It took us a while to confirm and identify her throughout all the chaos."Anchondo's father confirmed her identity. Now, the family is grieving the loss of a beloved mother, daughter and niece.Originally from Odessa, Texas, Anchondo loved being a mother to her children, Terry said. In addition to her two-month-old son, she had two children ages 5 and 2."She was light of the family. She had the most contagious smile and laugh," Terry told CNN."We lost the light of our family and the light of our heart. She would talk with anyone. She had a heart gold." 2471

A Texas longhorn from Alabama has broken the Guinness World Record for longest horns, measuring nearly 11 feet from tip to tip.The 7-year-old steer, named Poncho Via, had his record breaking measurement -- 10 feet, 7.4 inches long -- confirmed on May 8 in his hometown of Goodwater, Alabama, according to a news release from 337

After enduring the wrath of Hurricane Dorian, the Bahamas will need a lot of help to recover from the devastation — and there's several cruise lines ready to lend a hand to the destroyed country.Dorian is the most powerful hurricane on record to ever hit the Bahamas, with the islands of Abaco and Grand Bahama being particularly damaged. The death toll from the storm jumped Wednesday from seven to at least 20.In the wake of the widespread destruction, Royal Caribbean International, Carnival Corporation and Norwegian Cruise Line Holdings have all taken steps to help the Bahamas recover.Royal Caribbean, who has partnered with the Bahamas for their cruises for nearly five decades, is providing disaster relief in a number of ways. The cruise line is partnering with the Pan American Development Foundation to raise funds, 839

A romance scam has claimed another victim, a woman hoping for some companionship, but whose Mr. Right turned out to be all wrong.Petronica Williams thought she found the man of her dreams on Instagram, a great looking, New York City-based fitness trainer."He inboxed me on Instagram," Williams said, "saying 'hey gorgeous, I want to get to know you.' "Her Romeo sent videos, showing him training some of the stars of the VH1 reality show "Love and Hip Hop." Williams couldn't believe he was interested in her, but he was.She says their messaging got more and more intense, and he wanted her to come to his fitness studio in New York. Unfortunately, first he had to go to Africa on a short assignment.That's when trouble developed.New friend needs money to get home"He said he was over there working as a fitness trainer on a contract," Williams said. "But he was stranded and needed a way to get home."He needed money fast -- specifically 0 for a plane ticket home from Africa. He promised to return the money to her as soon as he got back to the U.S.So a love-struck Williams wired it to him through MoneyGram, and figured he was on his way.But he soon messaged her again, saying the Republic of Benin, in West Africa, would not let him leave unless he paid his income taxes first."They won't let me go home because I owe ,500 in taxes," the trainer messaged her.Before Williams took the time to realize what she was doing, she said, "I sent him a total ,076." Only after he stopped texting her back did she start suspecting she had been duped, that her fitness trainer may have been conning her from West Africa all along. 1644

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