Republicans: extreme right (slight adjustment: closed borders, mostly for laissez-faire economic reasons)
Democrats: extreme right (slight adjustment: (ever so slightly more) open borders, mostly for laissez-faire economic reasons)
Libertarians: extreme right
Even the bloody US communist party does not want to abolish markets. Think about how crazy that is.
On the borders point of view, a traditional leftist (one from the 70s or 80s) might even say that the republicans are clearly to the left, politically, of the democrats. Why ? Closed borders protect the rights, and increase living conditions and wages of laborers. Or, as we might say today, of "the 99%".
But yes, those same closed borders will make your iPads more expensive. A leftist should not care.