It's happening. Feds after Google data:

In court papers filed in U.S. District Court in San Jose, Justice Department lawyers revealed that Google has refused to comply with a subpoena issued last year for the records, which include a request for 1 million random Web addresses and records of all Google searches from any one-week period.

The auspice here is kiddie porn -- which is a great angle for facists to use: so you don't want google to turn over its data? what, you like looking at little boys? -- but I fully expect homeland-security to do a turn on this cycle sometime soon.