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Florida school massacre suspect on authorities' radar in 2016: report
PARKLAND, Fla. (Reuters) - A teenager accused of shooting to death 17 people at a Florida high school was investigated by police and state officials as far back as 2016 after slashing his arm in a social media video, and saying he wanted to buy a gun, but authorities determined he was receiving sufficient support, a newspaper said on Saturday.

U.S. charges Russians with 2016 U.S. election tampering to boost Trump
WASHINGTON (Reuters) - A Russian propaganda arm oversaw a criminal and espionage conspiracy to tamper in the 2016 U.S. presidential campaign to support Donald Trump and disparage Hillary Clinton, said an indictment released on Friday that revealed more details than previously known about Moscow's purported effort to interfere.

Confluence of crises crashes Trump's 'Infrastructure Week'
WASHINGTON (Reuters) - This was supposed to be "Infrastructure Week" for U.S. President Donald Trump, a time to unveil a long-promised plan to create jobs by revitalizing America's roads and bridges.

U.S. top court mulls whether to take up 'Dreamers' dispute
WASHINGTON (Reuters) - The U.S. Supreme Court on Friday discussed in private how to handle President Donald Trump's appeal of a judge's decision blocking his plan to end protections for young illegal immigrants dubbed "Dreamers," and the nine justices could announce as early as Tuesday whether they will take up the case.

Trump had affair with Playboy model: New Yorker report
WASHINGTON (Reuters) - U.S. President Donald Trump had an affair with a Playboy model at the same time he was in a relationship with a porn star and the National Enquirer tabloid paid the model $150,000 to prevent her story being made public, the New Yorker reported on Friday.

Monsanto loses bid to stop Arkansas ban on farm chemical
CHICAGO (Reuters) - An Arkansas judge on Friday dismissed a Monsanto Co lawsuit aiming to stop Arkansas from blocking the use of a controversial farm chemical the company makes, dealing a blow to its attempts to increase sales of genetically engineered seeds.