Jim Macklin wrote:
That is a poem on a plaque where immigrants came ashore and
were kept in isolation quarantine for weeks while their
health and skills were checked. If we had a Ellis Island
along the Mexican border, it might apply.

Close enough for the cigar, especially since many people connect Ellis
Island with the Statue of Liberty on Liberty Island. But this is
closer:

The New Colossus is a poem that American poet Emma Lazarus (1849-1887)
wrote in 1883 for the Statue of Liberty, New York.

Not like the brazen giant of Greek fame,
With conquering limbs astride from land to land;
Here at our sea-washed, sunset gates shall stand
A mighty woman with a torch, whose flame
Is the imprisoned lightning, and her name
Mother of Exiles. From her beacon-hand
Glows world-wide welcome; her mild eyes command
The air-bridged harbor that twin cities frame.
"Keep, ancient lands, your storied pomp!" cries she
With silent lips. "Give me your tired, your poor,
Your huddled masses yearning to breathe free,
The wretched refuse of your teeming shore.
Send these, the homeless, tempest-tost to me,
I lift my lamp beside the golden door!"