Respectfully disagree.
The IRS, ESPECIALLY under the direction of the Obama administration have shown absolutely no regard for law, truthfulness or anything other than imposing their will.
Perhaps long ago what you said is true, but recent times have shown the IRS to be an enforcement wing of the Left’s Brownshirt ideology.
Another real curse is state tax dept’s. I got a friend here in Florida, that lived in CT for 5 years, and before that NY state. NY state is going back 10 or more years and attaching his S.S. benefit back beyond the statues of limitations. Govt is above the laws I guess.