Rep. Seth Moulton (D-Mass.) is calling on House Republicans to fully back special counsel Robert Mueller's investigation into Russian election meddling and possible ties between the Trump campaign and Moscow.

Moulton will propose an amendment to the House GOP budget resolution that puts the House on record supporting Mueller's probe and committing to providing any resources the team of lawyers at the Justice Department needs, CNN reported Wednesday.

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According to prepared remarks, Moulton will ask, "Did you ever ask what your father or grandfather did in World War II? Our grandchildren will ask us, 'Where did we stand when Russia attacked the United States?' That's how serious this is. Think about what your grandson will say when he reads about you someday. Did you have the courage to stand up for our country, our Constitution, and our values, or did you vote this down because your party bosses told you to?"

House Republicans revealed their budget proposal Tuesday. It’s unclear whether Democrats will try to attach any other amendments related to Russia during the markup Wednesday.

Mueller has given the Senate Judiciary Committee permission to publicly interview Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE Jr. and former Trump campaign chairman Paul Manafort, ranking member Dianne Feinstein Dianne Emiel FeinsteinMcConnell says Trump nominee to replace Ginsburg will get Senate vote Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence Intensifying natural disasters do little to move needle on climate efforts MORE (D-Calif.) said Tuesday.

Trump Jr. last week released emails detailing plans for a 2016 meeting with a Russian lawyer offering compromising information on then-Democratic presidential nominee Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE to help his father's campaign, which some Democratic lawmakers are calling the "smoking gun" in the Russia probe.