Few of these ‘people’ practice doing what’s right for the USA. Their religious affiliation means little, with the possible exception of exhibit A: Oh Bummer, who bows to every country in the world, apologizes for America’s might, and gives special consideration to the Islamists everywhere.
You maybe correct however for Romney he is lds right down the line. He is considered “temple worthy”, which means he is part of the 15% of lds (only 15% are onsidered worthy enough) who are allowed into the inner circle. He must follow all the rules. As a side note Harry Reid and Jon Huntsman are also “temple worthy”.