In WA, PD contributor Hans Zeiger has introduced a bill proposing use of social impact bonds; Seattle Times endorses as a "smart way to solve old problems".
"State lawmakers interested in solving old problems in a new way should spend a few moments thumbing through Rep. Hans Zeiger’s proposal to create something called 'social impact bonds.' As seen in a growing number of sites around the world, social impact bonds are pay-for-performance contracts between private-sector capital funders, a human-services nonprofit and a government. The money pays for a human-service prevention program, run by the nonprofit. If the prevention works, and the state saves money, the funders get a negotiated rate of return." -- the Seattle Times