There is no similar group in America. Certainly not the paleolibertarians or paleocons. Everyone in America supports individual citizens and corporations doing business around the world. The question is whether our government should be constantly involved in every international body and "crisis".
I reject the notion that Pat Buchanan or Rand Paul or Ron Paul are isolationists. They are merely anti-meddling.
Our government should be primarily in the business of developing trade agreements with other nations and using its power to keep our business partners to their promises.
What sane person really believed that we could win the Iraq war and bring democracy to that hobbled-together country of sworn enemy populations in a reasonable amount of time? Anyone with a brain in his head had to know that the only possible way to bring democracy to Iraq was to impose a benevolent dictatorship on the country, and that that would not be politically viable. Therefore we should never have gone into Iraq, especially since all of the Republicans screamed after the failures in Vietnam that we should not go to war unless we had a viable exit strategy. For Iraq, there was no viable exit strategy, therefore we should never have gone in.
Anyone who continues to support the notion that going into Iraq was a good idea has no business labeling Pat Buchanan and the Paul's as isolationist.
I'm not saying that you are, but so many people are throwing around the isolationist label incorrectly that it is very frustrating.
The Democrats are busy hollowing out America from the inside while the Neocons are committing us to a continuous future of debt and strife and never-ending war.
Our prospects are bleak unless we return to the Constitutional principles that made this nation great to begin with.
That is determined by consensus and using the internet you can quickly see the consensus of who is or isn't in a particular group.
And I understand the argument commonly used to say that Ron Paul is a non-interventionist, not an isolationist. But there is no difference.
You can say that NeoCons are interventionists. And you can say that realists are interventionists only if it in the US's interest to intervene. And you can say that isolationists are non-interventionists.
You can also define each of these groups in regards to multilateralism versus unilateralism.
Whether you call them isolationists, non-interventionists, or some other name, they have essentially no influence on US foreign policy. They never serve on a GOP prez's foreign policy team and they are never allowed to serve as a chairman on a congressional committee that has anything to do with foreign policy.