There really needs to be more national level laws around PTO. Like my current employer has a policy to pay it out, but recently they've decided to cut our maxim

There really needs to be more national level laws around PTO. Like my current employer has a policy to pay it out, but recently they've decided to cut our maximum rollovers from 6+ weeks (150% of accrual) to 1 week maximum from year to year. First world problems but this year I'm going to be taking a ton of days off. I mean sure they can do that, but why can't we just have a set rule and stick with it?