Under Article 368, a Constitutional Amendment Bill must be passed by each House by special majority and, if affecting federal provisions, ratified by half of State Legislatures, but the President cannot return the Bill for reconsideration.

Article 368(2): Constitutional Amendment Bill passed by each House by special majority (majority of total membership + 2/3 present and voting). If affecting federal provisions, ratified by half of State Legislatures. President 'shall give assent' - no discretionary power to withhold assent or return for reconsideration. Ensures that once constitutional amendment procedure completed, it becomes law without executive veto, preserving parliamentary sovereignty in constitutional matters.