Land of the Free

Here are some Fun Facts: The International Centre for Prison Studies at Kings College in London maintains a list of Prison Population Totals by country. Now let's see, who wins?
Entire World - Prison Population Totals

1	United States of America	2,245,189
2	China	1,565,771
3	Russian Federation	889,598
4	Brazil	419,551
5	India	332,112
6	Mexico	216,290
7	Thailand	161,844
8	Ukraine	160,046
216	...	..

Well that's cause we're bigger, right? Sorry. They also maintain a list of Prison Population Rates across the world:

Entire World - Prison Population Rates per 100,000 of the national population

1	United States of America	750
2	French Guiana/Guyane (France)	630
3	Russian Federation	628
4	St. Kitts and Nevis	604
5	Virgin Islands (USA)	549
6	Cuba	c.531
7	Turkmenistan	c.489
8	Palau	478
9	Bermuda (UK)	464
9	Virgin Islands (United Kingdom)	464
11	Bahamas	462
12	Belize	461
13	Cayman Islands (United Kingdom)	453
14	Dominica	437
15	Belarus	426
16	Georgia	401
17	American Samoa (USA)	384
17	Barbados	384
19	Grenada	372
20	Netherlands Antilles (Netherlands)	364
211	. . .	..
211	Liberia	25
213	Central African Republic	24
214	Burkina Faso	23
214	Nauru	23
216	Congo (Brazzaville)	22

We won again.. Gee, that's awkward. The United States has more of its citizens in prison than any other country in the world on both a total AND a per-capita basis. That includes all those countries that we haven't yet freed yet, and even the ones that hate us for our ... help me out here. They hate us for our ... what was that saying again?