See, for example these articles:
Revisiting the Explosive Growth of Federal Crimes
http://www.heritage.org/research/reports/2008/06/revisiting-...
The Expanding Federal Police Power
http://www.cato.org/pubs/handbook/hb105-17.html
And the U.S. has a much higher percentage of its population in prison than China does:
http://www.nytimes.com/2008/04/23/world/americas/23iht-23pri...