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The Constitution of the United States, Article I, Section 9, paragraph 3 provides that: "No bill of attainder or ex post facto law will be passed."
Whether the bill passed by the House can pass constitutional muster is debatable. Some constitutional experts believe it could because it applies to a broad enough group and that retroactive tax measures over short periods have been upheld by courts. The House bill is retroactive only until Dec. 31, 2008.
Here
I wonder if the Supreme Court is included in "courts"?