"Circuit Court Judge Sarah O'Brien says the law requiring offenders to register their addresses might be harder to follow for the homeless. "

This is a major problem for sex offenders - and as a consequence, for the community in which they reside as well.  If we don't know where they're at, we have no way to track and locate - or warn others, for that matter.....

Judge: Sex offender registry can cover homeless

Associated Press

3:49 PM CDT, May 28, 2009

MADISON, Wis. - A judge says Wisconsin's sex offender registry law does not discriminate against homeless offenders.

Dane County Circuit Court Judge Sarah O'Brien says the law requiring offenders to register their addresses might be harder to follow for the homeless.

But she says that's an unintended consequence and outweighed by the government's interest in letting police and residents know where sex offenders live.

The ruling came in a case involving Joseph Larue, who is charged with failing to report his address to the registry between July and January.
The 43-year-old says he was sleeping outside of a Madison homeless shelter and the law is unconstitutional as applied to him and other homeless offenders.