More than two thousand Katrina evacuees are registered sex offenders. That number is based only a match between the names of offenders and the names of those who applied for disaster assistance. From this:
...[Wade Horn, assistant secretary for children and families at the Department of Health and Human Services] wrote the nation's 50 governors in late November to alert them to the new search they could undertake with FEMA, and the process they were to use.
"I am greatly concerned that known sex offenders who may have relocated to your State may take advantage of their anonymity and harm children once again," Horn wrote in a letter to Gov. Rick Perry of Texas.
The letter indicated that Texas law enforcement officials had already done a cross-check, and that it was the only state at that time which had.
Federal authorities told Texas of 304 known sex offenders who had relocated to the state, of which they know of 14 who have registered and provided contact information to law enforcement, said Jerry Strickland, spokesman for Texas Attorney General Greg Abbott...
It's a double-fallout: from both bad Bush administration policy and bad "liberalism". Someone at FEMA or another agency should have figured this out before and during the diaspora.
And, see "ACLU opposed background checks on evacuees" and "Milwaukee NAACP offended by evacuee background checks".
And, from September: "Many refugees have arrest records".
Perhaps worst of all, see "DHS official opposed background checks on evacuees".