Unfortunately, the new "uninsured" are those who make $1 more than 400% of the FPL.
Let's say you have family of 5 who get a subsidy of $1700/month. Making $1 more than 400% FPL for a family of 5, would cause one to lose the $1700/month is subsidies.
Not an lot of incentive to make more income, but a lot more incentive to make sure you make under 400% FPL.
- Make $1 more than 400% FPL - pay back all your subsidy $20,400; sorry, but you are worse off for making that $1 to $20,399 dollars more...
- Make $20,400 more than 400% FPL - congrats for all that extra work, you just broke even!
- Make $20,401 more than 400% FPL - you are starting to get ahead!!
But you have to pay taxes on that $20,400 so it's really more like $30k of useless extra income...