Rep. Adam Schiff (D-Calif.) took to Twitter on Wednesday to blast Russia over its meddling in the 2016 presidential election, alleging that the country tried to “tear us apart.”

“Russians used social media to push false stories, to place divisive ads and to organize protests in the US. Their goal was to tear us apart,” said Schiff, the top Democrat on the House Intelligence Committee, which is investigating ties between the Trump campaign and Russia.

Russians used social media to push false stories, to place divisive ads and to organize protests in the US. Their goal was to tear us apart.

— Adam Schiff (@RepAdamSchiff) September 13, 2017

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Sen. Mark Warner (Va.), the top Democrat on the Senate Intelligence Committee, similarly weighed in on reports this week that Russian agents used Facebook to promote protests in the U.S., including an anti-immigrant protest in August 2016 during the campaign. 

Republicans and Democrats on the House panel clashed last week over issuing subpoenas to the Justice Department and the FBI in regard to a controversial Trump dossier, which was produced by a former British spy. 

The dossier contains highly sensitive, unsubstantiated information about Trump’s relationship with Russia.

House Intelligence Committee Chairman Rep. Devin Nunes (R-Calif.) issued the subpoenas last week, but Schiff argued the action was a partisan move, aimed at discrediting the intelligence collected from the dossier. 

“I think there’s a view if they discredit Christopher Steele, they can discredit the whole Russia investigation, or the whole Russia involvement in our elections,” Schiff said on MSNBC last week, referring to the former British spy who compiled the information.