A lot has been said on this matter, with some of the best opinion from Erick at Peach Pundit and Grift Drift.

There’s a difference between disputing/repaying your taxes and avoiding your tax responsibility altogether. Legislators are just regular folks, and it’s reasonable to assume that some of them have set up repayment plans, or gotten audited, or had a lengthy dispute with the IRS- just like ordinary citizens.

Since we don’t know who the legislators are, we don’t have many details on what the circumstances might be. But I’d advocate giving them a fair hearing in the court of public opinion before I started throwing words like “deadbeat” and “tax cheat” around.