Ponder this: "legal" and "moral" are not the same thing. If this were true, genocide under the Nazis, under Stalin, under Pol Pot, under Mao Tse Tung, in Rwanda, Somalia would not be immoral - it was legal. Thus, legal and moral are NOT equivalent. Just because it's legal, doesn't mean it's right (moral). Corrupt people produce corrupt laws.
Look around around the "land of the free and the home of the brave" today. A judge struck down the "will of the people" as it relates to the "special rights" that the severely minority gay population seeks to secure. There are a variety of great articles written by smarter men than I on this topic, so I won't take the time to unpack it here today. (go to str.org for some great resources on this topic).
Infantcide - the murder for convenience of innocent, defenseless human persons - we call it abortion - justified as "choice."
The Homosexual Agenda - the absolute relentless assault against what is clearly "natural." I don't need to quote a single Scripture to demonstrate that this is an aberration and perversion of our clearly evident biological order.
Are there other moral issues? Yes there are. In my estimate, these are two of the most egregious issues off all time. Are they legal? Yes they are. In fact, living as a homosexual and even receiving the same "rights" as a married couple are ALREADY GIVEN to homosexual couples. What they are after is the name "marriage." It forces cultural acceptance. That's what they hope to accomplish - forcing their view on all the rest of us and then outlawing free expression to disagree. Freedom to disagree and publicly express it is a hallmark of the American nation. They are not concerned with the Constitution and the Bill of Rights, however.
Let me be clear. I stand against the sin of homosexuality with the same fervor as I do against heterosexual adultery. I stand against abortion the same way I stand against gossip. Sin is sin. Sin always robs us of God's perfect plan - AND - in the process it rapes, pillages and plunders our own lives and the lives of those around us. I stand, as a prophet to a culture gone mad, shouting for them to turn around as they paddle their boats ever closer to the falls called Niagra. Don't kill yourselves - don't kill your children! You may like the luxuries of this cultural ship, but that which lies beneath will strike you down and all the splendors of sin will go down with you, O Titanic culture!
Love God - Love People - Reject that which ultimately ravages people...for the sake of people. All the unjust can rule, but they will rule unjustly. It is not moral to kill babies. It is not moral to commit adultery. It is not moral to commit sodomy (homosexuality). You can say it is legal, but your moral intuition tells you it's wrong and lamentable.
Here's some good news. If we confess (call "sin" what God calls "sin") our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. We've all sinned even though it was "legal." Jesus joys to wash our immorality and issue us His own morality.