The Short Version
This claim is accurate. Multiple U.S. lawmakers have formally introduced legislation — most notably the bipartisan Payment Choice Act, introduced in both the House and Senate across 2024 and 2025 — that would require businesses to accept cash payments. GovTrack records confirm H.R. 8867 was introduced with 17 bipartisan cosponsors, and official congressional sources corroborate Senate versions. No such federal law has been enacted yet, but the claim only asserts that legislation has been proposed, which is clearly documented.