In the State of the Union address, the president announces a plan to overhaul the federal tax code by reducing tax rates and eliminating tax loopholes.

A president can propose tax changes in a State of the Union address, but Congress must write and pass the legislation. Congressional leaders can use their control over the legislative process to delay a bill and seek concessions on other issues. That makes D, congressional leaders stalling passage to gain concessions, the best answer; the other choices do not describe Congress’s direct role in passing the bill.

AI-written and checked against the verified answer.