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.

[EX Q]: SCOTUS has upheld "gun control" in principle repeatedly.
[EX A]: Valid

[EX Q]: Students and teachers in schools need to defend themselves, too... Like laws banning guns in sensitive places, concealed carry laws are consistent with Heller���s self-defense rationale only because the Court claimed to limit the arms right to the home.
[EX A]: Valid

[EX Q]: So for those keeping track the total of people currently recognized as having been murdered between 2007 and 2010 in incidents involving holders of concealed carry permits is 45.
[EX A]:
Valid