"ETV that the US Constitution is rigid and difficult to change"

Overall, is the US Constitution rigid and difficult to change-

It is not rigid and difficult to change because of its vagueness allowing different interpretations

The constitution IS rigid and difficult to change: Amendments Process

It requires a supermajority in Congress and 3/4 of states (very difficult w/ partisanship), e.g failure of the DC voting rights amendment and 1972 Equal Rights Amendment

The constitution IS NOT rigid and difficult to change: Amendments Process

Amendments are possible when they're needed and supported. E.g Civil War Amendments, 15th, 19th and 26th amendments fix voting rights

The constitution IS rigid and difficult to change: SCOTUS Interpretation of Branch Powers

The SCOTUS has allowed the Presidency to respond to growing demand for addressing social issues and modern needs. US v Curtis Wright established the President's prominent foreign policy role and US v Pink 1942 places executive agreements on the same level as treaties (exec agreements didn't exist)

The constitution IS NOT rigid and difficult to change: SCOTUS Interpretation of Branch Powers

Limits placed on branches have been rigid. The rigid system of checks an balances has created an imperilled president. E.g Obama fails immigration reform

The Constitution IS rigid and difficult to change: SCOTUS Interpretation of Rights

The right to bear arms has been entrenched despite calls for reform. Sandy Hooks shooting 2012, Obama fails gun reform. DC v Heller e.g

The Constitution IS NOT rigid and difficult to change: SCOTUS Interpretation of Rights

New rights have been introduced. E.g Obergefell v Hodges gay marriage rights