1893: Republican President Benjamin Harrison helps overthrow the Kingdom of Hawaii. Democratic President elect Cleveland opposes this and refuses to let Hawaii join the US. Republican President Mckinley later annexes Hawaii.
1993: The Senate votes to apologize for this. All but 2 of the 34 nays are from Republicans. One of the "Democrats" to vote nay and one of the Republicans to vote yes would later switch parties.
http://www.senate.gov/legislative/LIS/roll_call_lists/roll_call_vote_cfm.cfm?congress=103&session=1&vote=00332
