Here you go. Here are the actual statistics from the year 2000:
"Data from the 5 percent Public Use Microsample (PUMS) of the 2000 census were used to measure the institutionalization rates of immigrants and natives, focusing on males 18 to 39, most of whom are in correctional facilities. Of the 45.2 million males age 18 to 39, three percent were in federal or state prisons or local jails at the time of the 2000 census a total of over 1.3 million, in line with official prison statistics at that time.
Surprisingly, at least from the vantage of conventional wisdom, the data show the above hypotheses to be unfounded. In fact, the incarceration rate of the US born (3.51 percent) was four times the rate of the foreign born (0.86 percent). The foreign-born rate was half the 1.71 percent rate for non-Hispanic white natives, and 13 times less than the 11.6 percent incarceration rate for native black men"
http://www.migrationinformation.org/Fea ... cfm?id=403
"Tellingly, among the foreign born, the highest incarceration rate by far (4.5 percent) was observed among island-born Puerto Ricans, who are not immigrants as such since they are US citizens by birth and can travel to the mainland as natives. If the island-born Puerto Ricans were excluded from the foreign-born totals, the national incarceration rate for the foreign born would drop to 0.68 percent.
Of particular interest is the finding that the lowest incarceration rates among Latin American immigrants are seen for the least educated groups: Salvadorans and Guatemalans (0.52 percent), and Mexicans (0.70 percent). These are precisely the groups most stigmatized as "illegals" in the public perception and outcry about immigration."