<span>More than likely because in order for a congressional law to be Constitutional it has to fall under the powers given to Congress by the Constitution, one of those powers being the ability to regulate interstate commerce.</span>
The Beatles? They were an influential "rock" band from the UK. They were a group of influential musicians. Also, I think they were mainly in the '60s.
The Democrats and the Republicans have been arguing over if and when to start withdrawing troops from Iraq. This is an example of a inter-group type of conflict. Group inter-relate to accomplish the country's goals and objectives which can possibly create such conflict.
The answer would be letter D.
