So as not to highjack Jeremiah's thread on "being Scottish", I'll ask the same question seperately:

Why do many Americans insist on using the term Scots-Irish? Now, I understand it is meant to describe, for the most part, Ulster Protestants. But, are they not Irish as well? Is it simply a term created by "republicans" in the States to deny the Plantation Irish their rightful place as Ulstermen and Irish?