Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Republican 2008 presidential hopeful Senator John McCain is standing by his view that the Constitution guarantees everyone the right to carry a weapon although "obviously we have to keep guns in the hands of law-abiding citizens".
Student:
Valid