More people have died illegally crossing the southwestern border of the United States in the last 16 years than were killed in the Sept. 11, 2001, terrorist attacks and Hurricane Katrina combined. From October 2000 through September 2016, the Border Patrol documented 6,023 deaths in Arizona, California, New Mexico and Texas, while more than 4,800 people died in the Sept. 11 attacks and Hurricane Katrina.

For nearly 700 miles along the American border with Mexico, a wall already exists ... The border spans 1,900 miles across four states – California, New Mexico, Arizona and Texas ... About 40 miles past Ciudad Juárez, the wall of metal mesh abruptly ends, like a half-finished thought. The remaining border is marked by the Rio Grande. But hundreds of miles in rural Texas, including Big Bend National Park, are unfenced and lack any man-made barriers or walls whatsoever.

counties designated as “sanctuary” areas by ICE typically experience significantly lower rates of all types of crime, including lower homicide rates... In 2015, the typical sanctuary county in a large metropolitan area experienced 654 fewer crimes per 100,000 residents than the typical non-sanctuary county in a big, metropolitan area. That's an overall crime rate approximately 15 percent lower.

deportation promises, if fulfilled, would ripple far beyond the lives of illegal immigrants. Deportations would affect vast swaths of the economy — with a particularly dramatic impact on agriculture. ... Undocumented workers account for 67 percent of people harvesting fruit, according to the Agriculture Department. They make up 61 percent of all employees on vegetable farms, and as many as half of all workers picking crops.

The University of California announced sweeping actions...to protect its students who came into the country illegally, saying it would refuse to assist federal immigration agents, turn over confidential records without court orders or supply information for any national registry based on race, national origin or religion... UC does not track students’ immigration status... about 3,700 have obtained in-state tuition benefits under AB 540, a 2001 law designed to help those in the country illegally

there are roughly 1.9 million non-citizen immigrants who have been convicted of crimes and are subject to deportation — what the government calls “removable criminal aliens.” ... that total, however, includes both undocumented immigrants and noncitizens in the country legally ... there are roughly 11 million immigrants in the U.S. illegally and that approximately 820,000 of them have criminal records ... Some of those immigrants are already incarcerated

In 2014, just over a million people became legal permanent residents of the U.S. About two-thirds of them were relatives of current citizens or residents, fifteen per cent were admitted on the basis of professional skill, thirteen per cent were refugees and asylees, and five per cent were winners of a global lottery ... There were also, of course, unauthorized immigrants...estimates of this population have held at eleven or twelve million.

Costa Rica...has become a thoroughfare for tens of thousands of migrants from South America and elsewhere who are hoping to reach the U.S. ... Late last year, thousands of Cubans came. They got stuck in Costa Rica when Nicaragua refused to let them continue northward ... soon after came Haitians, Nigerians, Congolese, and even Kashmiris ... Authorities say about 150 migrants arrive every day, though only about 30 can sneak out daily into Nicaragua. That's left most migrants stranded at shelters.

The Supreme Court decision...effectively blocking President Obama’s immigration programs also comes as a blow to California legislators who have been fighting to offer health insurance to people living in the country illegally. Immigrants living in the U.S. without authorization can’t enroll in Obamacare and make up a large portion of those who remain uninsured in California ... those granted temporary relief from deportation to sign up for Medi-Cal, the state’s low-income health program.

California stands out for the many rights state lawmakers have granted to an estimated 3 million undocumented residents. The suite of policies goes far beyond driving privileges, providing freedom of movement, work opportunities and protections, access to healthcare coverage and financial assistance for higher education.Research suggests that ...undocumented immigrants in California contribute more than $3.1 billion annually in state and local taxes.