Proposed constitutional amendment: Within 30 days after a bill is made law, legislators that voted must pass an automatically generated comprehension test of the legislation at a 6th grade level. On failure they lose voting privileges for 90 days. On three strikes they leave office and a new election for that seat is called.
Why not make it a condition of the vote in the first place? Don't understand it? No vote for you. If your constituency wanted a say, they can let you know what they think about that.