"Irish America" is more than Catholicism in the U.S., JFK, St. Patrick's Day parades and Irish pride. Yes these are bright spots to Irish Americans, but there is more ‘green’ that flows in the history of America’s veins.
Did you know an Irishman was the first person to step off Columbus' ship and set foot on American ground?
That 15 U.S. Presidents have confirmed Irish ancestry?
Or that it was an Irish-American who was the first U.S. woman to walk in space?
As Americans celebrate the Fourth of July, keep in mind that the “Irishness” in America runs deep historically and culturally.
http://www.irishcentral.com/roots/Ten-patriotic-facts-about-the-Irish-in-America-97760299.html