We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) 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 death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.

In the US at least, we have the right to life, liberty, and the pursuit of happiness as long as it doesn't infringe upon the rights of others.
Valid

Life imprisonment without parole is more effective than execution, and it is cheaper.
Valid

The way he was teaching me about atheism made it seem like solipsism and atheism go hand in hand.

Invalid