Complex sentence: Altering the Constitution consists of proposing an amendment or amendments and subsequent ratificationjkher by the Congress with a two-thirds vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the state legislatures.
Split into simpler sentences: Altering the Constitution consists of proposing an amendment or amendments and subsequent ratification. Amendments may be proposed either by the Congress with a two-thirds vote in both the House of Representatives and the Senate or by a constitutional convention called for by two-thirds of the state legislatures.