President Donald Trump already has been criticized for falsely claiming that former President Barack Obama never called the families of fallen soldiers. Now he's being slammed by Democratic Rep. Frederica Wilson after he talked on the phone with the widow of a solider killed in Niger. SEE ALSO: Sports teams are deserting Trump’s hotels, and it’s hitting his wallet hard Trump reportedly told her that "he knew what he signed up for ... but when it happens it hurts anyway," Wilson told Local 10 News, the local ABC News affiliate in Miami. She told the same thing to NBC News, incredulous that Trump reportedly said "he knew what he signed up for" multiple times. .@RepWilson, who rode w/ Sgt. Johnson's widow, said she heard part of call w/ Pres. Trump; "He must've known what he signed up for" @NBC6 pic.twitter.com/Rep6ERrQEb — Michael Spears NBC6 (@MikeSpearsNBC6) October 17, 2017 This came from a Democratic member of Congress, not the widow of the solider, who hasn't commented publicly on the call. U.S. Army Sgt. La David Johnson was one of four U.S. soldiers killed in an ambush in Niger by 50 ISIS fighters. Just got off phone with Rep. Frederica Wilson, who overheard Trump's call with widow. Said she wanted to curse POTUS out for making her cry. — Philip Rucker (@PhilipRucker) October 18, 2017 Wilson was in limo w/ widow for POTUS call (on speaker), said Trump's “he knew what he was signing up for” made widow break down in tears. — Philip Rucker (@PhilipRucker) October 18, 2017 When asked for comment, the White House told Local 10 News, "The president's conversations with the families of American heroes who have made the ultimate sacrifice are private." WATCH: Cenk Uyguy explains how Donald Trump could be a two-term president.