Well, if we're going to list negative accomplishments, his reaching $15 Trillion dollars in debt and running Trillion dollar deficits, every year of his presidency, has to rank up there, too.
Highest persistent unemployment
Setting a record for breaking campaign promises has to be in the mix.
Most rounds of golf.
I could go on...
Osama bin Laden would have been killed on whomever's watch was going on when Special Operations and Intelligence infrastructure Obama railed against, during his campaign, caught up with him. Not as much an accomplishment for Obama as it was one for the dedicated team of intelligence operatives and military professionals that tracked his ass down and killed him.
Neil Armstrong died on his watch, too. You'd think the first man to set foot on the Moon would warrant more than a tweet. Why aren't the flags at half-staff?