WASHINGTON (AP) — Thousands of immigrant children fleeing poverty and violence in Central America to cross alone into the United States can live in American cities, attend public schools and possibly work here for years without consequences.

The chief reasons are an overburdened, deeply flawed system of immigration courts and a 2002 law intended to protect children’s welfare, an Associated Press investigation finds.

Driving the dramatic increases in these immigrants is the recognition throughout Honduras, Guatemala and El Salvador that children who make the dangerous trip can effectively remain in the U.S. for years before facing even a moderate risk of deportation.

The Obama administration estimates it will catch 90,000 children trying to illegally cross the Mexican border without their parents by the end of the current budget year in September. Last year, the government returned fewer than 2,000 children to their native countries.

The administration has asked Congress for $2 billion to spend on the issue.

“They almost never go home,” said Gary Mead, who until last year was director of the Immigration and Customs Enforcement office responsible for finding and removing immigrants living in the country. “It’s not a process that ultimately ends in easy resolutions or clear-cut resolutions.”

The situation is widely perceived as becoming a humanitarian crisis at the border. The system is now so overwhelmed that children are being housed in Border Patrol facilities ill-equipped to handle them.

The government has asked the military to open temporary shelters in Texas, Oklahoma and California.

U.S. officials, including the Homeland Security secretary, the White House domestic policy council director and the Customs and Border Protection commissioner have described immigrant families’ concerns about education, jobs and personal safety as driving the rise in border crossings.

Only recently have officials acknowledged that perceptions that these children may be allowed to stay or that Congress soon may relax U.S. immigration laws — which is highly unlikely — may also be responsible.

The AP’s investigation, based on interviews, court records and federal data, found that such perceptions are understandable because of America’s broken system.

“That misinformation is causing some people who are in a rather desperate situation to risk their lives to come to the United States border expecting that they’ll be able to stay in this country. That is simply not true,” White House spokesman Josh Earnest said Friday.

“It’s important for viewers or those consumers of information in Central America to understand that showing up at the border illegally is not a ticket into this,” he said.

Elmer Antunez Barahona, 17, left Honduras last year to reunite with his mother, who had traveled to find work in the United States when he was 4. He was apprehended in Texas’ Rio Grande Valley, one of more than 26,000 juveniles apprehended at the border in the 2013 budget year. His lawyer, Victor Cuco, said he spent about a month in government custody before being reunited with his mother in Virginia last summer.

The Border Patrol has apprehended more than 52,000 child immigrants traveling on their own since the start of the 2014 budget year in October.

Like Antunez and thousands of others, most spend about one month in the custody of the Office of Refugee and Resettlement under the Health and Human Services Department, before they are reunited with parents or other relatives in the United States. There is no requirement that their parents or those other relatives were legally allowed into the United States.

All the young immigrants who cross the border illegally are subject to deportation eventually. But it’s not a quick process.

The immigration court system was backlogged with as many as 30,000 pending cases before the most recent surge.

Court delays that already persist for years will grow even longer as the beleaguered system absorbs the cases for the new children immigrants. That will make the risk of speedy deportation even less likely and further fuel perceptions that crossing the U.S. border carries few immediate consequences.

Antunez lived in the U.S. for nearly nine months before his first court hearing in March. When he appeared again last week in an immigration court in Arlington, Virginia, Antunez was ordered to come back again next year after his lawyer told Judge John M. Bryant that his client will ask the government for asylum.

It was the same for many for the teenagers who stood in court for their first hearings. The judge told them, come back next year and try to find a lawyer in the meantime.

Cuco, the immigration lawyer, said next year’s hearing will only be the beginning of a process that will take years longer.

Antunez will meet with an asylum officer at U.S. Citizenship and Immigration Services and his case probably will be sent back to court, his lawyer said.

As he waits, the high school freshman will focus on school and keep learning English. Six months after his asylum claim is filed, Antunez can apply for a work permit.

Final decisions by immigration judges can take years, but that supposes immigrants dutifully attend their assigned hearings. Many won’t. As many as one-quarter of the immigrants ordered to show up in court in recent years have failed to appear, according to the Executive Office for Immigration Review, the Justice Department agency that runs immigration courts.

“The longer the process goes, the less likely it is that people will return,” said Doris Meissner, a former head of the Immigration and Naturalization Service.

After years in the United States, immigrants establish roots.

Advocates so far have successfully urged President Barack Obama not to immediately deport many young immigrants and those whose only offense is living in the country illegally.

Instead, the government has more narrowly targeted people who return to the U.S. after they were deported, people who threaten U.S. national security and public safety and adults who can be subject to expedited deportation that takes hours or days.

The recent increase in child immigrants is politically inopportune for Obama, who has pushed Congress to act on long-stalled proposals to overhaul the nation’s immigration laws.

The president has made several administrative changes to immigration enforcement, including a program to allow some young immigrants who came to the country before 2007 to avoid deportation and obtain a work permit for two years.

Children crossing the border “would not be entitled to a path to citizenship as a result of entering the country now,” said Customs and Border Commissioner Gil Kerlikowske.

Republican lawmakers have criticized Obama’s immigration policies and blamed the administration for what Obama has described a humanitarian issue at the border.

“Once these minors come to the U.S., they are eligible for a wide array of benefits and it will be years before their case is ever heard in court,” said GOP Rep. Bob Goodlatte of Virginia, chairman of the House Judiciary Committee.

“Without immediate consequences for this illegal immigration, it will only encourage more illegal immigration and more dangerous journeys by children in order to take advantage of the administration’s failure to enforce our immigration laws,” he said.

Adult immigrants caught crossing the Mexican border illegally are generally removed from the U.S. within hours or days of their arrest. But a federal law dating to President George W. Bush’s administration requires that unaccompanied child immigrants must be turned over to HHS within three days. From there, many are reunited with parents or other relatives already in the United States or other sponsors before the lengthy court process beings.

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Follow Alicia A. Caldwell on Twitter at www.twitter.com/acaldwellap