Atotal of 26 states, including texas, formally challenged what part of the affordable care act?

The part of the affordable care act that a total of 26 states challenged as well as texas is the expansion of the Medicaid. They had challenged to expand the Medicaid as a way of providing an option that may be of continuous and affordable for the people.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.