If POTUS comes out against it and exposes it for what it is, they will very likely end up with fewer than the votes needed to override.
I am at the point where I believe the national interest would be served for Trump to commandeer a Trident, wipe out that entire area, and begin with a new elected government. These people as proved by the FBI/Clinton/Obama cabal who began a coup or illegal overthrow of the election, based on nothing but crap show it is against any outside person expressing the will of the people or the best interests of the USA.
I guarantee the RINOs will join the commie dems to undermine Trump by first challenging his EO in court while passing laws to undermine any border enforcement. Short of using the military to enforce his edicts, which will not happen, he is stymied.