Not to be nitpicking, but Nixon was good at foreign policy ... Obama is horrible at it. Besides, what Nixon and company did pales in comparison to what the folks in DC get by with now days.
I *do* agree with you regarding Nixon and foreign policy...Nixon was a disaster with his domestic line...but strong on overseas stuff.
I am merely pointing toward popular notions.
Heck, even Carter had one foreign policy success: Camp David accords....and ONE domestic policy success: he began the deregulation of the airline industry. Overall, though, he sucked.