It's not only your computer data Denise - the government can take any written material too!
The Director of the Federal Bureau of Investigation or a designee of the Director (whose rank shall be no lower than Assistant Special Agent in Charge) may make an application for an order requiring the production of any tangible things (including books, records, papers, documents, and other items), provided that such investigation of a United States person is not conducted solely upon the basis of activities protected by the first amendment to the Constitution
Including all your bank records if you've made an overseas payment.
The Secretary of the Treasury may require any domestic financial institution or domestic financial agency to maintain records, file reports, or both, concerning the aggregate amount of transactions, or concerning each transaction, with respect to a jurisdiction outside of the United States, 1 or more financial institutions operating outside of the United States, 1 or more classes of transactions within, or involving, a jurisdiction outside of the United States, or 1 or more types of accounts
How did all this stuff get passed!!