The government is not supposed to use intelligence-gathering authorities to eavesdrop on U.S. citizens. But legal experts say there are exceptions, and that U.S. citizens can be targeted if the government can demonstrate to a special intelligence court that there is reason to suspect the citizen is acting as an agent of a foreign government.
James Oliphant and Richard Simon in the Washington bureau contributed to this report.
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The A merican Israel Public Affairs Committee is one of the best-conne cted lobbying groups in Washin gton.
Funded by its 100,000 members, AIPAC bills itself as "America's pro-Israel lobby."
The organization's goal is to "help make Israel more secure," its website says.
As successes, it cites bills and resolutions "condemning and imposing tough sanctions on Iran" and requiring the U.S. to evaluate military sales to Arab states "in the context of the need to maintain Israel's qualitative military edge over potential adversaries."