i,m working to medical instrument in iran. i want get usa visa and travel to usa . i want know possibel or not

With the increasing tension between the United States and Iran,I would say the chances are highly unlikely that you will get a visa for the United States.Good luck.

Is possible.

I am not sure what you mean about 'working to medical instrument', are you a technician? If so, we do need those, but that will be weighed against the fact that you are from a 'country of interest' which will likely slow down any background check. However, you should go to the source: USCIS.gov.

i doubt it