Karl Rove defies another judicial subpoena to testify for the Senate Judiciary committee. Can a former presidential aide like Rove keeping using executive privilege to avoid appearing? MSNBC guest host Alison Stewart is joined by George Washington University professor Jonathan Turley to talk about Rove and other topics.

This video is from MSNBC's The Rachel Maddow Show, broadcast Feb. 23, 2009.

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