Are you serious with this bullshit?
I can name 100 things the government has done wrong- Most "right wingers" dont like the government, myself included.
Every single catastophy this country has ever experienced is almost always the governments fault in some respect. Most recently, the countries and the worlds financial crisis was directly caused by horrible legislation, bad government oversight and incompatent politicians. Both 911 attacks= Governments fault etc. etc. etc. etc. etc.
If you are asking about foreign policy- I think Vietnam was a bad decision, Kennedy's bay of pigs fiasco was pretty bad, pretty much every single action taken by Jimmy Carter foreign policy wise was a disaster ( especially with regards to Iran-- which is why Iran is a pain in the ass today), cutting and running during the second gulf war was a horrible decision. Imo, the biggest blunder in modern american history was cutting and running after the Afghans defeated the USSR.