First of all, even assuming the underlying assumption of your argument, that is not true. President Obama, even if he were technically unqualified, still holds apparent authority - and Congress, by seating him, has ratified his apparent authority with actual authority.
This is first year law school stuff.
So the Nazis said at Nuremberg. Must have been first year stuff in their law school. Apparently you attended the same one that they did.
If you are assuming the underlying assumption, then you cannot claim it not true. The argument is whether or not Obama is legally qualified to hold the office of President. Until that is settled, then the Captain has every right to question his authority.
President Obama, even if he were technically unqualified, still holds apparent authority - and Congress, by seating him, has ratified his apparent authority with actual authority.
If the Congress abdicates its authority, then we have anarchy. Simply because Congress passes a law does not mean that the law is Constitutional.
That is first year Constitutional Law stuff.