IRC § 6013(g) & Tax Treaty Implications

Being a USC, married to an NRA, I elected to have my spouse treated as a U.S. resident for income tax purposes (IRC § 6013(g)), I note however; Individuals making this election are generally prohibited from claiming benefits under a U.S. income tax treaty as a resident of a treaty country.
Would this mean for example that Social Security would be taxed by both the UK AND the U.S? What other restrictions would this common election bring?

I think SS will be only be taxed in the U.K. as the treaty doesn’t seem to make any exceptions.  Hopefully someone more knowledgeable will come along and give a more informed opinion.

From section 17 of the US/UK treaty:

Notwithstanding the provisions of paragraph 1 of this Article, payments made by a Contracting State under the provisions of the social security or similar legislation of that State to a resident of the other Contracting State shall be taxable only in that other State.

Thanks durhamlad. There must be many who made the election, so I would also be curious to learn how people interpret.