Biden's Irish visit stirs controversy and unity.

During his visit to Ireland, President Joe Biden mistakenly referred to a rugby team as "Black and Tans," the pejorative name given to British police recruits assigned to fight the Irish Republican Army in the 1920s. Biden has been trying to balance soaking in his Irish ancestry while staying out of historical political grudges during his four-day swing to the United Kingdom and Ireland. Biden also made a clear jab at England, saying that "Biden is English." On Thursday, Biden is set to address Ireland's parliament and meet with Irish leaders.