too much
http://www.usopen.com/pdf/moneyList.pdf
None, that would be illegal.
Niccaragua
The US contributed well over 384 million in 2008
The US and Iran have not had relations since 1979. There have been no serious overtures to start up relations given the United States' opposition to Iranian nuclear ambitions and Iran's position on Israel. The biggest progress is the recent agreement between the US, Europe, and Iran on the rules by which the nuclear negotiations would go.
Well, from the moment that Islamic revolution occurred in 1978, Iran has changed a lot. The relationships between Iran and the US was ended and the US and its allies put sanctions on Iran. Iran is not so safe, but traveling there is considered as one of the enjoyable trips that everyone can experience.
Not explicitly, but oil money may be used in Iran to fund it.
Assuming you are asking if the wire can come into the US, then: NO. Currently, you cannot receive a Wire Transfer from Iran, as Iran is on the list of countries that the US does not trade and/or do business with. A wire transfer originating from Iran would immediately be Flagged by the receiving bank and reported to FinCEN (Financial Crimes Enforcement Network) as part of the OFAC (Office of Foreign Assets Control) check mechanism. However, many remitters (senders) from Iran, may use correspondent banking channels in the Middle East (Read: Dubai) to send across a wire transfer to you, that would then be originating from UAE, as opposed to Iran. Such a wire transfer would make its way across without issues.
The US Embassy hostages in Iran.
Iran demanded that the US return the former Shah of Iran (Mohammed Reza Pahlavi) to Iran for a trial (which would undoubtedly result in his execution) and unfreeze Iranian government funds in Swiss Banks in exchange for the US hostages. Iran eventually got the money, but not the Shah, who died in exile in Egypt.
Over 2600 Tooman