It seems to me that many American histrions have been purposely ignoring the impact the indigenous irish had on America (usa) I will only be including the indigenous irish accomplishments, so if their ancestry is say viking or germanic I can't include them , which does seem silly but never the less.
An irish man coined the phrase usa,the phrase "United States of America" is from a letter dated January 2, 1776, written by Stephen Moylan an irishman ..
James Hoban (c. 1758 – December 8, 1831) was an Irish-born American architect, best known for designing the White House in Washington, D.C. which is based on an irish building.
The first American general to die during the Revolutionary War was Irish
The Dubliner Richard Montgomery, who first served in the British Army during the French and Indian War, but later joined the Americans’ fight for independence, is the first general to have been killed in battle during the Revolutionary War.
An Irishman was the first of Christopher Columbus’ crew to step on American soil
There were several Irishmen in Christopher Columbus’ crew. But the one who stands out most is Patrick Maguire. In 1492, Irish-born Maguire was the first crew member of Christopher Columbus’ to set foot on American ground.
A blind Irishman composed the “Star Spangled Banner”
Though British composer John Stafford Smith, who was born in 1750, is credited for composing "The Star Spangled Banner,” the tune is actually based on music composed by the great Irish blind harper Turlough O'Carolan, who died over 35 years before the American Revolution.
An irishman was the only Catholic to sign the declaration of independence.
The famous picture lunch atop a skyscraper (maybe you've seen it)
A good majority of the men on the beam were Irishmen.
Washington was one of the founding members of the sons of St Patrick .
Of course there's many accomplishments I left out , mostly because I'm lazy .