The US Pacific territory of Guam is considering a 'two-strikes' bill which would see repeat offenders given life sentences in jail.

Bill 107, known as the 'two-strikes' bill, sets a mandatory life sentence for any criminal who has been previously convicted of a violent crime.

Objections were raised to the initial form of the bill, amid fears it could unfairly target the mentally ill, or soldiers suffering post-traumatic stress disorder.

The Bill's author, Senator Brant McCreadie, has told Pacific Beat the bill has been amended from 25 offences to 14, which he describes as "the 14 deadly sins".

"The 14 offences, which range from murder to hurting children - none of these offences...are little fish.

"All of these offences, I believe, shouldn't go without severe punishment."

"It basically gives you one opportunity to rehabilitate yourself - it says that two strikes and after the second violent offence...you receive a life sentence in prison."

The bill will be discussed in the legislature this week and could be passed as early as Friday.

During public hearings it found strong support among victims of crime groups, but faces criticism that it would remove the ability of judges to show leniency.

Senator McCreadie says that's not the case.

"It is our job as lawmakers to identify problems and to address problems," he said.

"All we're doing is we're answering a call to the problem with crime - does this take away discretion from judges? I don't believe so.

"This just makes it harder for criminals to reoffend - if this passes it would be almost impossible for criminals to reoffend."