Senate Minority Leader Charles Schumer and other senior Senate Democrats on Monday called on the Treasury and State departments to impose sanctions on Russian individuals found to be meddling in U.S. elections following reports of new interference efforts.

In a letter to Secretary of State Mike Pompeo and Treasury Secretary Steven Mnuchin, the Senate Democrats pointed to concerns about reports last week that Russian agents are already interfering in the lead-up to the 2020 U.S. elections in order to boost the campaigns of President Trump and Democratic candidate Sen. Bernie Sanders.

“In light of this information, we urge you to immediately and forcefully impose sanctions on the government of the Russian Federation, any Russian actors determined to be responsible for such interference, and those acting on their behalf or providing material or financial support for these election interference efforts,” Schumer and Sens. Sherrod Brown and Bob Menendez wrote.