"......Until recently, these people would have been discarded in overcrowded prisons. After all they were caught in Texas – the toughest state of a nation that locks up more offenders than any other in the world, with more than one in every 100 adults behind bars. Instead they receive counselling and assistance with housing and employment, although they can be sent back to jail if they fail drug tests, abscond or reoffend. One woman, a crystal meth addict, tells me the sessions in court are like walking on eggshells. But there are small incentives for those doing well, such as $10 gift vouchers or – on the day I visited – barbecue lunch out with Francis. "These people have to believe we care and want them to succeed," he tells me later. "Once they believe in me they can start to change."

They are beneficiaries of a revolution in justice sweeping the United States, one with illuminating lessons for Britain. It is a revolt led by hardline conservatives who have declared prison a sign of state failure. They say it is an inefficient use of taxpayers' money when the same people, often damaged by drink, drugs, mental health problems or chaotic backgrounds, return there again and again.

Remarkably, this revolution was unleashed in "hang 'em high" Texas, which prides itself on its toughness and still holds more executions than other states. But instead of building more prisons and jailing ever more people, Texas is now diverting funds to sophisticated rehabilitation programmes to reduce recidivism. Money has been poured into probation, parole and specialist services for addicts, the mentally ill, women and veterans. And it has worked: figures show even violent crime dropping at more than twice the national average, while cutting costs and reducing prison populations.

In the process, right-wingers have allied with liberals who long advocated such an approach, detoxifying one of the most poisonous political debates at a time when US party divisions have never been sharper. "This used to be one of the most emotive and ideologically divisive issues in the country," says Adam Gelb of the Pew Center on the States, a social-policy research charity which is backing the initiative. "We are starting to see the triumph of sound science over soundbites.

"There is not agreement on the causes of crime or even the purpose of punishment," Gelb continues, "but there is agreement on the solutions. Liberals and conservatives are getting to the same destination from very different routes." "