Wrong. They are SEPARATE but EQUAL, neither has the Authority to overrule the other.
Yes, but only in their venue and jurisdiction. The Judicial Branch ONLY Decides Constitutional issues for the JUDICIAL Branch. The Executive branch and the Legislative can decide for themselves what is permitted under the Constitution. Read some history and you will find countless examples of the Executive and Legislative branches telling the USSC of Despots to go pound Watermelons. Try Andrew Jackson with regards to revoking the Charter of the Central Bank (biddle). USSC said he couldn’t do it, he did it anyway, and told the public that the USSC can only decide for themselves what was constitutional.
The legislative Branch does however have the power under the Constitution to ELIMINATE any Judicial Revue of the lwas they pass, they have done it before but very rarely.