[oh8eleven]

Getting those who signed up this year enrolled again for 2015 won’t be as easy as it might seem.
If someone is already enrolled, why do they have to do it again?

[what's up]

Because circumstances have changed. A regular insurance company will not have to worry about your income, for example, as long as you pay your premiums.

With Obamacare your subsidy will likely be changing every year based on income, commissions, bonuses, etc. etc. The IRS has to make sure you're legit if you're getting taxpayer money.