As we can see from the evidence provided by conservatives in this thread (as well as many other sources), the fundamental conflict between rightists and liberals is the latter’s rejection of dogma and adherence to pragmatism.
Indeed, the basic authoritarianism of conservatives and their innate need to adhere blindly to rightist dogma make it impossible for them to understand the liberal mind open to ideas regardless their political origin.
For example, in addition to being a violation of the Constitutional right to privacy, liberals oppose laws banning abortion because such measures simply won’t work – regardless one’s perception of the morality of the issue. If one seriously wishes to end abortion, the most useless ‘solution’ would be to outlaw it.
Liberals oppose most things authoritarian conservatives advocate because they either won’t work (such as voter ID laws), there’s no objective factual evidence in support of what conservatives advocate (applicants for public assistance are ‘drug abusers’

, and is often in violation of the Constitution (denying same-sex couples equal access to marriage laws).
The rightist position on immigration is yet another example of how authoritarian conservatives get it wrong, particularly with regard to undocumented aliens who came to the US legally but lost their legal status subsequently through no fault of their own. Pragmatic liberals know there is no way legally or morally to force such persons back to their ‘birth countries,’ and the pragmatic and productive thing to do is allow them to attend college and/or serve in the military to become productive members of a society that is already their home.
What is the authoritarian conservative’s ‘solution’ for these undocumented aliens? Keep them out of school, ignorant and unemployable, drive them underground where they’ll likely become a burden on society and eventual criminals.
Good plan, conservatives.
And last but certainly not least, is the fallacy that is conservative fiscal dogma: their pathetic and inane dream to recreate an 18th Century economic structure in a 21 Century First World Industrialized Super Power.
It would be laughable if not for the fact that they are serious with regard to this naïve, unrealistic, and reactionary goal.
The sheer idiocy of conservatism, and its authoritarianism anathema to basic American principles, will prove its ultimate undoing – the trick is to limit the damage until that happy day arrives.