Reading through this thread, it has become obvious that nearly nobody on here understands how unique and special the United STATES of America is. We are a laboratory of 50 different little countries that are largely (provided they do not deprive anyone of their Creator endowed rights) free to enact any set of laws governing the behavior of their citizens. All the problems you mention are solvable within that construct of liberty and freedom:
1. Drugs are becoming legal in some states and illegal in others. If you don't like the drug laws in your state, you are free to move.
2. Abortion was for most of US history left to the states to legislate. When liberals swept through and magically discovered a right to kill an not-yet-viable baby in the womb in the constitution, they violated the states-as-laboratories construct and set the country on fire. Repeal Roe and the model will work again.
3. Subsidies - Planned Parenthood, ethanol, oil, and every other special interest that feeds on our tax dollars - need to be gradually shut off. The federal government should not be picking winners and losers.
4. Get the federal government off the backs of private business and industry. If I want to use an incandescent light bulb or an inefficient water heater, or run my thermostat way cold in the summer and high in the winter and take an hour long shower, I can. Energy is in unlimited supply in this world. I find it illustrative that they always like to count to smoking deaths as reasoning for anti-smoking laws (75% of HEAVY smokers never contract lung cancer) but nobody counts all the automobile deaths resulting from CAFE standards requiring cars to be made lighter and lighter.
Thanks for letting me get that off my chest!
Ted Cruz 2016 -- Cruz/Rubio even better.