Can you send an ACH with a SWIFT code?

Could you please clarify for me if it's possible to send an Automated Clearing House (ACH) transaction utilizing a SWIFT code? My understanding is that ACH is primarily used for domestic transactions within the United States, while SWIFT codes are typically associated with international wire transfers. Is there a way to bridge these two systems, or is there another mechanism I should be considering for my cross-border payments? Given the differences in payment infrastructures and regulatory requirements, I'm eager to learn the best way to ensure secure and efficient transactions.