If Amash isn't a libertarian, you aren't either and should be honest about it. You're a run-of-the-mill Republican. For some reason people continue to act as if libertarians are nothing more than a subset of the GOP. Nope, wrong. OMG he said something that Elizabeth Warren also said? Oy vey!
Some libertarian positions appeal to the left, some to the right, some to both and maybe some to neither, but the "socially liberal, fiscally conservative" message appeals to many in the middle and the middle decides elections. That is why libertarians are treated as a scourge to the two party duopoly. Libertarians are a threat to that scamming, mind-controlling, divide and conquer duopoly which forces the middle to choose a side of the controlled duopoly.