I haven't seen the Dems get into law a significant simplification of the tax code in the last 20 years. The last simplification we got was from Trump (which was a good step, but obviously isn't the final desired location).
He also did that before the Dems took back the House, so he had the GOP sign on to it.
He also did that before the Dems took back the House, so he had the GOP sign on to it.