Three US Republican lawmakers are pushing the American aerospace giant, Boeing, to refrain from getting into any deal with Iran.

In a letter to Boeing CEO Dennis Muilenburg, the Illinois Republican congressmen asked the company no to business with Tehran for any supply of planes and other services.

Congressmen Peter Roskam, Bob Dold and Randy Hultgren referred to a last July nuclear agreement between Iran and the permanent UN Security Council members plus Germany (P5+1) that removed anti-Iran sanctions in return for curbs on Tehran�s nuclear program, saying in their letter that any Iran deal with Boeing would be legal but �not right,� according to Fox News.

�This is not about doing what is legal � it is about doing what is right,� the letter said.

The Republican lawmakers reiterated US allegations of Iranian support for terror, telling Boeing that Iran�s Islamic Revolution Guards Corps (IRGC) can turn the planes into combat aircraft.

�We urge you not to be complicit in the likely conversion of Boeing aircraft to IRGC warplanes,� said the lawmakers.

Congressman Roskam, chairman of the US House Committee on Ways and Means Oversight, has been particularly vocal in his anti-Iran position, previously pushing for Europe�s multinational plane-maker Airbus to scuttle its $25 billion deal to sell 118 planes to Iran.

Roskam on Friday introduced an amendment to the National Defense Authorization Act, which would prohibit the US Department of Defense from awarding contracts to any entity that does business with Iran.

This is while Boeing is not alone in its interest in Iranian ventures. General Electric Co., among others, is also reportedly exploring business opportunities in Iran.

�Should any agreements be reached at some future point, they would be contingent on the approval of the US government,� Boeing said in a statement in April.

Last month, Iranian officials said�Boeing had�proposed to sell new models of its�737, 777 and 787 aircraft�to Iran and promised after-sales support.

In late January, Iran�s Deputy Transport Minister Asghar Fakhrieh-Kashan said�the country was planning�to purchase over 100 planes from Boeing.

The official noted that Iran�s order list from the American company included 737s for domestic flights and two-aisle 777s for long-haul routes.

Iranian officials have already emphasized that the country will need to buy 500 commercial jets of various models for various short-, medium- and long-distance routes.

By Press TV