Congress cannot enact a change the definition of natural-born Citizen other than by way of a specific amendment to the Constitution, the wording of which unambiguously requires such change (vis. this is one reason why the 14th Amendment did NOT work a change to the original meaning of the Constitutional term natural-born Citizen).
Congress whenever it chooses can of course bring about a change to its existing Naturalization statute by means of enacting an ordinary new statute. The 14th Amendment is a mere amendment to the Naturalization statute, even though it was strategically (and admittedly through very hard work) elevated to the status of Constitutional Law (i.e., laws that are very much like any other law except (in part) that they are particularly hard to change or remove or supersede once they are successfully enacted).
Resolutions, on the other hand, mean precisely nothing, and do nothing, in this area of law (an uniform Rule of Naturalization).
They can change the constitutional requirement for the president to be a "natural born citizen" by creating a constitutional amendment, but they cannot change the meaning of "natural born citizen" through a constitutional amendment.
It means what it means, and you can't make it mean something else by passing a law.