How about “Go and preach the Gospel to all men?” That’s what the Church is doing.
The first evangelizers in what is now the US were Spanish Catholics, btw; the first “pastor” was Fr. Francisco Lopez, who celebrated the first Mass in what is now St Augustine, Florida on September 8, 1565. It was attended by the Indians and evangelization began immediately.
Only a couple of centuries later, the extensive chain of Indian missions were destroyed by the attacks of English Protestant colonists from Georgia and South and many Indians and priests were killed, while about 11,000 captured Indians were sent as slaves to the British sugar plantations in the West Indies.
At least the Catholics had everything South of the United States, from Mexico to Central America and South America.