What are member countries required to do? are there different requirements for
different countries? why?

Member countries were required to monitor greenhouse gases and actively try to reduce them. yes, they are different requirements for more developed countries as they contributed to a lot of it.

Explanation:

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.