Americans haven't heard much about upcoming congressional hearings on the radicalization of U.S. Muslims, yet more than half think it's a good idea, and nearly as many believe Muslims here haven't done enough to fight extremists in their midst, according to a new poll.

At the same time, 62% say American Muslims are an important part of the religious community, and a clear majority (72%) say Congress should investigate religious extremism anywhere it exists, not just among Muslims, according to a new survey released today by The Public Religion Research Institute and Religion News Service.

The PPRI/RNS poll was released as House Homeland Security Committee Chairman Peter King, R-N.Y., prepares to hold hearings on the threat of homegrown Islamic extremism during the week of March 7.

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