SAN FRANCISCO (Reuters) - Immigrants are far less likely than the average U.S.-born citizen to commit crime in California, the most populous state in the United States, according to a report issued late on Monday.

People born outside the United States make up about 35 percent of California's adult population but account for about 17 percent of the adult prison population, the report by the Public Policy Institute of California showed.

According to the report's authors the findings suggest that long-standing fears of immigration as a threat to public safety are unjustified. The report also noted that U.S.-born adult men are incarcerated at a rate more than 2 1/2 times greater than that of foreign-born men.

"Our research indicates that limiting immigration, requiring higher educational levels to obtain visas, or spending more money to increase penalties against criminal immigrants will have little impact on public safety," said Kristin Butcher, co-author of the report and associate professor of economics at Wellesley College.

The study did not differentiate between

INS/FBI Statistical Report on Undocumented Immigrants

2006 (First Quarter) INS/FBI Statistical Report on Undocumented Immigrants

CRIME STATISTICS 95% of warrants for murder in Los Angeles are for illegal aliens.

83% of warrants for murder in Phoenix are for illegal aliens.

86% of warrants for murder in Albuquerque are for illegal aliens.

75% of those on the most wanted list in Los Angeles, Phoenix and Albuquerque are illegal aliens.

24.9% of all inmates in California detention centers are Mexican nationals here illegally

40.1% of all inmates in Arizona detention centers are Mexican nationals here illegally

48.2% of all inmates in New Mexico detention centers are Mexican nationals here illegally

29% (630,000) convicted illegal alien felons fill our state and federal prisons at a cost of $1.6 billion annually

53% plus of all investigated burglaries reported in California, New Mexico, Nevada, Arizona and Texas are perpetrated by illegal aliens.

50% plus of all gang members in Los Angeles are illegal aliens from south of the border.

71% plus of all apprehended cars stolen in 2005 in Texas, New Mexico, Arizona, Nevada and California were stolen by Illegal aliens or “transport coyotes".

47% of cited/stopped drivers in California have no license, no insurance and no registration for the vehicle. Of that 47%, 92% are illegal aliens.

63% of cited/stopped drivers in Arizona have no license, no insurance and no registration for the vehicle. Of that 63%, 97% are illegal aliens

66% of cited/stopped drivers in New Mexico have no license, no insurance and no registration for the vehicle. Of that 66% 98% are illegal aliens.

BIRTH STATISTICS 380,000 plus “anchor babies” were born in the U.S. in 2005 to illegal alien parents, making 380,000 babies automatically U.S.citizens.

97.2% of all costs incurred from those births were paid by the American taxpayers.

66% plus of all births in California are to illegal alien Mexicans on Medi-Cal whose births were paid for by taxpayers.