San Francisco defendant’s immigration history is common

Francisco Sanchez, center, is lead out of the courtroom by San Francisco Public Defender Jeff Adachi, right, and Assistant District Attorney Diana Garciaor, left, after his arraignment at the Hall of Justice on Tuesday, July 7, 2015,  in San Francisco.  (Michael Macor/San Francisco Chronicle via AP, Pool)

Francisco Sanchez, center, is lead out of the courtroom by San Francisco Public Defender Jeff Adachi, right, and Assistant District Attorney Diana Garciaor, left, after his arraignment at the Hall of Justice on Tuesday, July 7, 2015, in San Francisco. (Michael Macor/San Francisco Chronicle via AP, Pool)

Long before he was arrested in the shooting death of a woman at one of San Francisco’s most popular tourist sites, Juan Francisco Lopez Sanchez was using the U.S.-Mexican border like a revolving door.

He was arrested while in the U.S. illegally and deported to his native Mexico five times from June 1994 to June 2009, only to slip back into the country within days, weeks or months. He served roughly 15 years in federal prison in three stints for illegal re-entry, completing his most recent stretch earlier this year.

But his habit of sneaking across the border over and over again is not all that uncommon. And probably no one outside law enforcement would have even paid much attention to Sanchez if not for what happened after he finished his latest stint behind bars.

Last week, he was arrested and accused of killing 32-year-old Kathryn Steinle as she strolled on a popular San Francisco pier with her father. It turned out that Sanchez, 45, was out on the streets because of San Francisco’s “sanctuary” policy of minimal cooperation with federal immigration authorities.

The slaying has brought heavy criticism down on the city from politicians of both parties and become the latest flashpoint in the debate over how to deal with illegal immigration.

It illustrated yet again the way border enforcement along the nearly 2,000-mile boundary with Mexico is a gargantuan and often frustrating task.

“It’s hard to physically prevent a committed immigrant from finding a way to get back in the U.S.,” said Marc Rosenblum, deputy director for U.S. immigration policy at the Migration Policy Institute. “There is no death penalty for immigration.”

In another tragic twist in the case, the U.S. Bureau of Land Management said Wednesday that a gun belonging to one of its rangers was used in the killing. Spokeswoman Dan Wilson said the service weapon had been stolen from the ranger’s car in a break-in.

In 2013, a total of 18,498 people were sentenced for the federal crime of felony re-entry of the U.S. The offenders had been deported an average of 3.2 times each. The average sentence was 18 months, according to the U.S. Sentencing Commission.

Sanchez was deported the first time less than four months before President Bill Clinton launched Operation Gatekeeper to beef up border enforcement in San Diego, where the Border Patrol was badly overmatched by immigrants who typically stormed out of the hills by the dozens or the hundreds.

A dramatic increase in border enforcement from California to Texas after 9/11 made it increasingly difficult to cross. The Border Patrol doubled to more than 20,000 agents under President George W. Bush, and fences were erected on about one-third of the border.

Still, the most determined and physically fit are able to cross.

Exactly how Sanchez managed to keep slipping back into the U.S. was not clear. But he was sent to federal prison in 1998, serving about 4½ years, and again in 2003, where he put in nearly six years, and again in 2011, when he got close to four years.

After he completed that term, federal officials transferred him to San Francisco’s jail in March to face a 20-year-old marijuana charge.

But local prosecutors dropped the drug charge, and the San Francisco sheriff, citing the city’s sanctuary policy and a 2013 city ordinance, released Sanchez in April, despite an Immigration and Customs Enforcement request to hold him for deportation.

ICE officials criticized the sheriff, who in turned blamed the federal agency for not obtaining a warrant or court order that would have kept Sanchez locked up.

After his arrest in the waterfront shooting, Sanchez told TV news stations he found the gun on the pier under a T-shirt and it accidentally went off. He pleaded not guilty Tuesday to murder charges.Juan Francisco Lopez-SanchezKathryn SteinlePier 14Pier 14 shooting

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