In a letter sent to each of the three groups, Republicans inquired about the funding the groups have received from Sea Change since 2006 and called for disclosure of whether the groups “are aware of concerns that Sea Change may be a conduit for Russian funding.”

“Provided the public reporting of Putin’s dark money influence in Europe and the concerns surrounding similar efforts in the United States, we write today to explore your connections with Sea Change,” the Republicans stated in the letter. “Any action by President Putin, the Russian government, or Putin’s allies to undermine American energy security must be addressed.”

In addition, the Republicans asked the groups if they have received funds or took a particular action after a request “from the Russian government or anyone connected with the Russian government.”