Why would they do that? The tax code is clear and always has been. You SHOULD be submitting and filing tax returns if you live here >179 days in a year. The only thing that changed is that new directive on taxable income in the same tax year. Don't lose sight of why this has all come up, apart from that nothing is new.
Enforcement of course is a different conversation, no one will do it unless forced to file, or penalties become scary enough and common enough to want to file.