I worked in a town (LEO) that was about 1/4 Mormon. They came across my radar as suspects at a far less rate than any other group except for 7th Day Adventists.
And for the record, I don't belong to either group, just a standard non-denom Protestant - that's what my dog tag said anyway.
As far as their Patriotism, Two of the four LDS Senators voted for the last Amnesty, hence I would rate them below average.
YMMV
There's four Mormon Senators? I count Bennett, Hatch and Reid. Who's the fourth?