Reply #6: Here's some info on PCA being suspended

[Emit]

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The act contains legal loopholes by exception, "except in such cases and under such circumstances as such employment of said force may be expressly authorized by the Constitution or by act of Congress." These exceptions provided a loophole by which Posse Comitatus has been suspended several times in this century, including use of federal troops to end rioting in Chicago in 1919, against "Bonus Marchers" in Washington, D.C. in 1932, and under the Truman administration when a railroad workers’ strike was ended by nationalizing the railroads and placing them temporarily under the Army Corps of Engineers. Recent debates have been over what authorities troops should have during Hurricane Andrew relief operations, and how, or whether, troops could be employed to support the Olympic Games in Atlanta.

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http://66.102.7.104/search?q=cache:ToQH48BaVeYJ:www.airpower.maxwell.af.mil/airchronicles/cc/baker1.html+suspended+The+Posse+Comitatus+Act+president+&hl=en

Also, I found this interesting: A GOPer warning about Bush suspending the PCA:

http://66.102.7.104/search?q=cache:n2HcoES7XBgJ:www.gopinsight.com/2005/10/posse-comitatus-one-small-act-of.php+suspend+The+Posse+Comitatus+Act+president+&hl=en