Which part of the constitution gives congress a flexible way of interpreting its powers to act?

Answer 1

the ''necessary and proper'' clause

Answer 2

The Necessary and Proper Clause, also known as the Elastic Clause, is the part of the Constitution that gives Congress a flexible way of interpreting its powers to act. It grants Congress the authority to make all laws that are necessary and proper to carry out its enumerated powers. This clause enables Congress to adapt to changing circumstances and address unforeseen issues beyond explicitly listed powers.