TASK DEFINITION: We would like you to assess the QUALITY of each of the following argument (discussing Gun Control) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of gun control. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gun control.
PROBLEM: Its activists have battled to allow firearms on college campuses, in bars and in churches.

SOLUTION: Valid

PROBLEM: After opposition from the National Rifle Association, 22 Democrats joined Republicans in a Senate vote this month to negate the District of Columbia's tough gun registration requirements and overturn its ban on rapid-fire semiautomatic weapons.

SOLUTION: Valid

PROBLEM: Every fear of theirs is there in your positions; you use the words to invent a regulating power, you use the words to erect strict conditioning and qualifications on the right merely recognized and secured by the Amendment.

SOLUTION:
Valid