You can find all the congressional powers, including the dealing with foreign relations, in Article 1 of the US Constitution.
hold in contempt
private bills
Human relations is intra-organization. This means management dealing with the people that work for a company. Public relations is inter- organization or dealing with the customers, competitors, government etc. outside of the organization.
Prosecute for a perjurygrand immunityissue a subpoena?
work for big company dealing with international relations
Increase public awareness
When you are dealing with a number of variables and relations between them.
the branch of ecology dealing with the relations between natural communities and their environment
algebra the branch of mathematics dealing with the properties and relations of numbers; the generalized and extension of arithmetic. - algebraic
Increase public awareness
Amendment.
The difference is that in public relations, they deal with more than just the media and will also deal with other groups like certain companies while media relations will specialize in dealing with the media.