What is a true conservative?

One major attack leveled at Senator John McCain is that he isn't a true conservative. I've heard it, you've heard it, we've all read it.

So, what is a true conservative? Senator McCain believes in the constitution, believes in America, believes in low taxes and small government, believes in protecting gun rights and unborn babies, believes in states rights. So, for some reason he isn't a conservative?

Who decided that a true conservative had to back "all" tax cuts even when they had a negative affect on the economy? I think a true conservative demands spending cuts with all tax cuts.

Who decided that a true conservative had to back torture of terror suspects? I think a true conservative demands that America stand above the brutality of torture and say that we won't be terrorized into acting like animals.

Who decided that a true conservative would ship millions of Mexicans across the border? I think a true conservative believes in open borders, globalism, security in freedom and equal access. The Democrats are pushing to socialize medicine and social services, not me. Privatize medicine even more, privatize social services even more. Then this whole "I don't want no spanish speaking worker getting free medicine" baloney can go away. Frankly, aren't conservatives learning that we better take care of "the least of these" or we're gonna be in the minority anyway?

How to identify a true conservative