To the Editor:

You report that Amtrak shares information about its passengers with the Drug Enforcement Administration and receives a 10 percent cut of assets seized from drug couriers (Week in Review, April 15). For the fee, Amtrak, without being asked or subpoenaed to produce information about any person in particular, simply reveals all its passengers' names, itineraries and payment methods to the drug enforcement agency.

What other companies are selling information about their customers to the government? Does the F.B.I. know what books we buy or what videos we rent? Does the Internal Revenue Service know about our routine banking practices or to whom we send overnight letters and packages?

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