Its not EXCLUSIVELY American. It has evolved into a global socioeconomic term. Not exclusively foreign, either. Oops.
John spoke of his "Atlanta Fat Cats" group. Here's a cut and paste from one of his interviews:
13 JOHN RAMSEY: Right. Those are the phrases
14 that we, you know, later we thought we had heard
15 from people around us who have tried to
16 reconstruct who, where.
17 MIKE KANE: When you say we thought?
18 JOHN RAMSEY: Patsy and I.
19 MIKE KANE: Okay. And how was it that you
20 heard?
21 JOHN RAMSEY: Well, grow a brain, fat
22 cats. We'd heard those before.
23 MIKE KANE: Were you ever able to --
24 JOHN RAMSEY: Well, we had some names
25 we came up with. We passed on (INAUDIBLE) our
0343
1 friends in Atlanta, "Atlanta fat cats " later in
2 that week.
3 MIKE KANE: When was that specifically?
4 JOHN RAMSEY: That was when she was back;
5 when we were back for the funeral.
6 MIKE KANE: (INAUDIBLE) friends saying that
7 about?
8 JOHN RAMSEY: Well, when we went back, Rod
9 Westmoreland had like a little reception after the
10 funeral, and some of my friends were there, and he
11 has a beautiful home in Atlanta. He makes a lot of
12 money. It's not a stretch for him to have it. It's
13 very nice.
14 My friends were around me, consoling me and trying
15 to give me advice. And to be a part of that group
16 it's the Atlanta fat cats.