The Texas Supreme Court will consider a challenge to the state's retroactive sex offender laws that some say unfairly stack new punishments on those convicted in plea deals.

More than 2,800 sex offenders remain on the Texas registry despite being no longer required to register under terms of their probation, according to an Austin-American Statesman analysis of the list.

Every qualifying sex offender was ordered onto the registry in 2005 after Texas expanded its sex offense laws. But that included some defendants who were promised in deals with prosecutors that they wouldn't have to be on the list after a certain amount of time.

Donnie Miller struck a deal with Travis County prosecutors after he was charged with sexual assault against a woman outside an Austin gentleman's club in 1993. A jury couldn't agree on a verdict at his trial, forcing Miller to face a second trial and more than $20,000 in legal fees.

He made a deal with prosecutors to plead guilty and in exchange, his record would be cleaned if he stayed out of trouble for 10 years. But Miller received a call a year after successfully completing his probation telling him that Texas had changed the rules and that he'd be on the sex offender registry for life, contrary to the terms of his plea deal.

"If I'd known, why would I have taken a plea deal?" said Miller, 48. "I would have borrowed the money for the retrial."

In a lawsuit before the Texas Supreme Court regarding another similar case, San Antonio attorney Angela Moore argues that undoing plea bargains makes the agreements worthless. About 94 percent of criminal convictions are disposed of with pleas, she said.

Texas Department of Public Safety attorneys warn that the lawsuit could relieve many "other sex offenders of their duty to register."

Texas was among several states to expand state law to include offenders from old cases. The U.S. Supreme Court had ruled in 2003 that Alaska's law retroactively requiring old sex offenders with completed sentences to register was legal because the registry wasn't intended to be punitive.

But recent studies show that public lists can have severe consequences, such as public shaming and limiting job opportunities. Since the Alaska decision, new research has emerged that disproves what policymakers previously thought to be true about sex offenders and the effectiveness of such laws.

The updated findings are appearing in court cases a