Russian trolls are meddling in US immigration controversy, a top GOP senator says The administration is under political fire for its "zero tolerance" policy.

Trump says he will sign 'something' soon to keep immigrant families together

Trump says he will sign 'something' soon to keep immigrant families together Jaap Arriens/NurPhoto via Getty Images FILE

Russia trolls and bots are at it again, this time taking advantage of a roiling controversy around immigration and family separation at the U.S. border, a prominent Republican senator said.

Bill Clark/CQ Roll Call/Getty Images, FILE

President Trump and his administration have come under heavy political fire for their "zero tolerance" policy resulting in families’ being separated at the border.

During 2016, online propaganda efforts were allegedly used by the Russia-government linked Internet Research Agency in an ambitious campaign to meddle in the U.S. presidential election, zeroing in on immigration, race relations and religion, according to an indictment handed up by a Washington, D.C.-based grand jury earlier this year.

Special counsel Robert Mueller announced in February the sweeping indictment of 13 Russians and three Kremlin-connected Russian companies for the alleged criminal interference.

It's unknown whether the effort Lankford highlighted is Kremlin-backed. The senator's staff declined to provide details.

A Twitter spokesperson told ABC News Wednesday, "Twitter regularly takes proactive measures to promote healthy conversations and to combat abuse and manipulation on our platform. We are continuing to invest significant resources to protect the health and integrity of important conversations on Twitter."