House Democratic leadership is bringing out the big guns against a Republican bill set to be voted on next week that would require proof of U.S. citizenship to vote in federal elections, Axios has learned.

Why it matters: House Republicans have made non-citizen voting in federal elections — for which there is no evidence of a widespread phenomenon — a marquee issue going into the 2024 campaign.

• House Speaker Mike Johnson (R-La.), largely ignoring House Democrats' drama this week, has posted on X about non-citizen voting multiple times since Wednesday.

State of play: The House is set to vote next week on the Safeguard American Voter Eligibility Act, or SAVE Act, which would require "documentary proof of United States citizenship" to vote in federal elections.