U.S. President Donald Trump waves as he boards Air Force One at John F. Kennedy International Airport in New York, before his departure back to Washington, U.S., December 2, 2017. REUTERS/Yuri Gripas
By Roberta Rampton and Karen Freifeld
WASHINGTON/NEW YORK (Reuters) – A series of tweets by U.S. President Donald Trump about the investigation into contacts between his 2016 campaign and Russia prompted concerns on Sunday among both Democratic and Republican lawmakers, with Republican Senator Lindsey Graham saying Trump could be wading into “peril” by commenting on the probe.
“I would just say this with the president: There’s an ongoing criminal investigation,” Graham said on the CBS program “Face the Nation.”
“You tweet and comment regarding ongoing criminal investigations at your own peril,” he added.
On Sunday morning, Trump wrote on Twitter that he never asked former FBI Director James Comey to stop investigating Michael Flynn, the president’s former national…