But they do tax it when you withdraw it, and by the age of 72, you are forced to take a required minimum distribution, they could simply force that required distribution to go up and insure it’s taxed at a higher rate.
They definitely will eventually do that to ROTH’s. They won’t allow people to pay no taxes except on social security. I know traditional are still taxed. But the ROTH’s would not need to be mandatory to take out as it wouldn’t benefit the government at all.