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]: Illegal firearms can be identified and linked to other firearms and to crimes and criminals.
[EX A]: Valid

[EX Q]: For Madison, a bill of rights provided a second chance for his pet project: to obtain the congressional veto of state laws that he had tried, but failed, to achieve at the 1787 Convention.
[EX A]: Invalid

[EX Q]: Instead of heaping more onerous restrictions upon good citizens or law-abiding gun dealers who are not the source of crime guns, is it not more reasonable - though admittedly more difficult - to target the real source of crime guns?
[EX A]:
Valid