Who approves amendment to the constitution?

Answer 1

The US Congress must approve Constitutional Amendments by a 2/3rds majority. The previous answer (The Supreme Court) is incorrect. The Supreme Court has powers of Constitutional review (given in the Marbury vs Madison decision, commonly credited as the template of what is today considered the core of the power of the Supreme Court), which means they may find laws or precedents inconstitutional and revoke their power (i.e., Brown v Board of Education, which found "separate but equal" to be inconstitutional). This is not the same as creating Constitutional amendments.

Answer 2

Amendments to the US Constitution are ratfied by either (a) approval of the legislatures of 3/4 of the states or (b) approval by ratifying conventions in 3/4 of the states. Each proposed amendment in the last 80 years has provided the method for its own ratification. Only the 21st Amendment has used option (b).

Answer 3

Approved by the legislatures in 3 quarters of the states. once approved, it becomes part of the supreme law of the land.

Answer 4

The US Congress must approve Constitutional Amendments by a 2/3rds majority.

Answer 5

the legislature