Someone who is "punctilious" is

careful about manners
obedient
reluctant or unsure
rebellious

Someone who is "punctilious" is careful about manners

Example:

That boy is punctilious to his guests every event or occasion.

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make 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.

an interest group is an organization whose members share common concerns, and try to influence government policies that impact those concerns. elected officials frequently complain about the influence of "special interests" on american politics.