Who said anything about states enforcing their laws in other states? Not me.
That's what "Repeal all state laws which prevent insurance companies from competing across state lines. We should all have the legal right to purchase health insurance from any insurance company in any state and we should be able use that insurance wherever we live. Health insurance should be portable." means. At least the way it's constructed by conservatives today.
Insurers locate in a "primary state." Their products are subject to the laws governing that primary state (which is why they'd have an incentive to 1) choose a state with lax laws or 2) be enticed by states willing to let them rewrite the state insurance laws in exchange for headquartering there and bringing much-needed jobs with them). They can then sell their insurance products in any other state ("secondary states") but those products are still subject only to the laws of the primary state. Thus the point of the exercise is to grant federal authority to states to effectively deregulate each other by empowering them to make end runs around each other's laws. That's why they call it a race to the bottom.
However, enforcement responsibility still falls to the primary state ("‘IN GENERAL- Subject to subsection (b), with respect to specific individual health insurance coverage the primary State for such coverage has sole jurisdiction to enforce the primary State’s covered laws in the primary State and any secondary State."). Which means that every state becomes responsible for enforcing its laws in every other state (or at least those in which its insurers are operating).
If you weren't endorsing the standard Republican across-state-lines proposal, apologies. And if you were, you should probably look into it a bit more.
And if the plan conforms to the state that they are selling it in, no problem.
We do it with motor vehicles, and other products. I see no valid reason why it couldn't be done with health insurance.
Right now, each state, legislates what it requires from thos insurance companies practicing in their state do.
Anthem wanted to raise their insurance rates by 20% plus, our Health Secretary put a stop to it and held them to an 11% increase...Anthem sued the State, the courts sided with the State, saying they could do such....and held Anthem to only increasing 11%....(which was still beyond reason of a yearly increase imho)
Our state has also chosen what and whom has to be covered by the Insurance companies asking to be licensed in our State... to sell to our citizens.
Letting insurance companies to sell across state lines, has to come with the insurance company meeting the requirements of each state they plan to sell to, OR the Federal gvt just doing such, wrongly usurps the RIGHTS OF THE individual STATES imo.