Finally getting this done. w00t!

Major premise: It is unconstitutional to infringe upon a right guaranteed in the bill of rights. 

Minor premise: The right to bear arms is guaranteed in the bill of rights.

Conclusion: Infringing upon the right to bear arms (gun control) is unconstitutional.

Mental Health

Major Premise: Stress is unhealthy for the human psyche.

Minor Premise: Homework causes stress.

Conclusion: Homework is unhealthy.

Birthrates and the Environment

Major Premise: Overpopulation is causing environmental problems.
Minor Premise: To control overpopulation we must control birthrates.
Conclusion: Controlling birthrates will help end environmental problems.

Guns

Major Premise: Guns can only kill people if there are bullets loaded in the gun.

Minor Premise: Bullet sales can be banned.

Therefore: Death by guns can be banned.

Israel-Palestine Conflict

Major Premise: When someone seizes another's land, conflict arises.

Minor Premise: Israel seized the Palestinians' land.

Conclusion: Therefore, conflict arose from the seizing of Palestine.

Death Penalty

Major Premise: People deserve punishment for heinous crimes

Minor Premise: The Death Penalty is a legal way of receiving  punishment

Conclusion: Therefore the Death Penalty should remain as a legal way of receiving punishment

Gun Control

major premise: Guns kill people

Minor premise: Killing people is illegal

Conclusion: Therefore, Guns should be illegal