In general the US public would have been aware, and would have been supportive. After the 1848 revolutions, a significant number of German revolutionaries immigrated to the United States (where many, such as Carl Schurz, would play prominent roles in the union military and federal government during the US Civil war).

Lajos Kossuth, leader of the suppressed revolution in Hungary, visited the US in 1851-52 during his subsequent exile, and was widely feted on a tour of the country, even being granted the honor of speaking before both houses of Congress.