Rogers and Ryan, along with some conservative groups, should be commended for their sensitivity to the limits imposed by the Constitution.

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It is hampered by a tight limit imposed by the new constitution engineered by Mr Correa and promulgated last October, which imposed a 12-month deadline for approving new regulatory measures.

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In 1832, the Polish constitution was abolished and replaced by one imposed by Czar Nicholas I.

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Lands Minister Amos Kimunya - who supports the proposed constitution - says it addresses land injustices imposed on Kenyans by the colonial government.

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But one interpretation of Brazil's constitution holds that higher rates for higher earners can be imposed only through the income tax.

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In the federal system, severe restrictions have been imposed on the ancient writ of habeas corpus, a common law doctrine predating the U.S. Constitution by several centuries, which allows the wrongly convicted to attack their trials and verdicts.

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