The secretive Foreign Intelligence Surveillance Court approved all 1,506 government requests to electronically monitor suspected “agents” of a foreign power or terrorists on U.S. soil last year, according to a Justice Department report released under the Freedom of Information Act.

The two-page report, which shows about a 13 percent increase in the number of applications for electronic surveillance between 2009 and 2010, was obtained by the Federation of American Scientists and published Friday.

“The FISC did not deny any applications in whole, or in part,” according to the April 19 report to Se...