Corporations have never been obligated to issue contracts to anyone in this country who was willing to try and secure said contract by deceptively representing a lack of existing conditions that would lead a corporation, or any individual, to reject, or modify said contract.
The laws of states have almost uniformly, since the founding of the U.S., allowed any such ill-gotten contract to be rescinded upon discovery of such misrepresentation, intentional, or not!!!
Most health insurance/health plan contracts specify conditions and time periods for which there will be no coverage in any event and the applicant is usually made aware of any such "limitations and exclusions!" Without these, it's is generally impossible to actuarily determine how much to charge for the risk being assumed so at least a time cushion is provided the insurer to allow reserving for early claims.
Most starry eyed, emotion driven liberals just can't seem to comprehend this basic fact of contract law!!!
But that would depend on whether the non-disclosure is material, wouldn’t it?
If they ask you if you ever had an ulcer, and you lie, that invalidates the contract.
If they ask you if you have had any other significant health problems, then the question of which such conditions are ‘significant’, and which are not, would be raised by the insured’s attorney.