Can you use ACH internationally?

As a cryptocurrency and finance practitioner, I'm often asked about various payment methods. One common inquiry I encounter is, "Can you use ACH internationally?" The questioner often expresses curiosity with a slight note of uncertainty, seeking clarity on the international applicability of this payment mechanism. Their tone might suggest a desire for a concise yet informative answer that can clarify the boundaries and possibilities of using ACH for cross-border transactions. The questioner's interest in ACH internationally reflects a broader trend of exploring alternative payment options, especially in the context of global finance and cryptocurrency transactions.