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.

It's quite obvious by this and as well as the SCOTUS decision that the right to keep and bear arms is not dependent on the militia part, but the other way around.
Valid

If guns are banned, there will obviously be less guns in circulation.
Valid

I've heard you conclude some pretty far off stuff (e.g. that we should tax guns to fund the Brady campaign, that four-year-olds can carry firearms around, that gun owners have small tools, etc.).

Valid