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  The Constitution gives expressed powers to congress in Article,Section 8.
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  Supreme Court upholds the concept of implied powers,declaring that the powers to tax,borrow,®ulate to establish a national bank
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  Supreme Court rejects State efforts to regulate immigration, declaring it congressional Issue
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  The U.S. government issues its first legal tender notes,which are popularly called greenbacks
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  The Sherman Antitrust Act, based on the commerce power,regulates monopolies and other practices that limit competition.
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  The Wagner Act,based on the commerce power, recognize labor's right to bargain collectively. The Social Security Act id passed.
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  The interstate and National Highway Act,based on the commerce and war powers,provide for a national interstate highway system
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  Congress amends the Social Security Act of 1935 to create Medicare,which covers hospital and other health-care
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  The Americans with Disabilities Act,based on the commerce power,prohibits discrimination against the physically impaired.
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  In United States v. Lopez,the court strikes down the Gun-Free School Zone of 1990 on the grounds that the federal government invades reserved powers of the states with this legislation.