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.

If the Founding Fathers were referring to keeping and bearing arms for ANY legitimate purpose, they would have said so, in a SINGLE sentence or Amendment.
Valid

One can only speculate that the ban made crime skyrocket.
Valid

For decades we have proved drug cases by having a scientist who tests the drug submit an affidavit which says ���its cocaine��� or ���its marijuana������without having to call the scientist to testify about his findings.

Invalid