No, both your "objections" fall into the category of "ad hominem". And your latest falls into the category of "guilt by association". These are classic dishonest argumentation techniques (and I certainly don't need to tell you that!).
If those "objections" would keep one out of national politics, then who among our current political leaders could stay in office? Which of Tancredo's alleged sins compares with the rampant corruption and bribe-taking that permeates both branches of Congress?
If you were being honest, you would say "I hate Tom Tancredo because I support massive illegal immigration, and consider anyone who opposes it to be a threat to my interests."
They show that he will never be elected Nationally and people like you will pump him up to "Perot" the Republican candidate.