An obscure rule – the Congressional Review Act (CRA) – is providing a Republican-controlled US Congress with a tool to support president Trump’s goal of jump-starting business. Of the more than 70 CRA joint resolutions introduced in the first 45 days of the 115th Congress, 15 of them have been energy-related. Two have been passed and signed by the president. Two more are likely to pass soon. Used successfully only once since its inception, its current use in the Congress is historic and may never be repeated.