[InterceptPoint]

From a June 2010 USA Today Article:

States instituting the rule include Illinois, Indiana, Maryland, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, Ohio, Oregon, Pennsylvania, Utah, Vermont, Virginia, Washington and Wisconsin, reports the Associated Press.

...

As a result of the ban, some familiar brands such as Cascade and Colgate-Palmolive are offering dish soaps with few or no phosphates.

[Ditter]

I haven’t noticed a problem with my dishes but then Texas is not on your list. I’ll go check my dishwasher soap.

[Monitor]

States instituting the rule include Illinois, Indiana, Maryland, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, Ohio, Oregon, Pennsylvania, Utah, Vermont, Virginia, Washington and Wisconsin, reports the Associated Press.

This explains why I can only find boxes of phosphate-free "TSP" at the local stores.