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I have a trip to the USA planned for 2018. I am a citizen of Montenegro - we are on good standing with the Americans, but we do need to apply for a visa in order to visit.

The possible issue is - I visited Iran earlier this year as a tourist. I am a bit worried I may be declined for this reason, but I will take my chances and schedule the interview at the embassy.

What I am more worried about is the following scenario:

1. the consul approves my visa request, I am issued a visa

2. I book my flights and travel to NY

3. some TSA/immigration officer decides not to let me into the country after all

4. I waste a lot of time and money and have to take the first flight back

Is this possible? Can someone at the airport override the embassy's decision and deny me entry?

There is no legal reason for me not to visit, it's only the Iranian visa in my passport that has me concerned I may be turned back for "security reasons".

I have a trip to the USA planned for 2018. I am a citizen of Montenegro - we are on good standing with the Americans, but we do need to apply for a visa in order to visit.

The possible issue is - I visited Iran earlier this year as a tourist. I am a bit worried I may be declined for this reason, but I will take my chances and schedule the interview at the embassy.

What I am more worried about is the following scenario:

1. The consul approves my visa request, I am issued a visa

2. I book my flights and travel to NY

3. Some TSA/immigration officer decides not to let me into the country after all

4. I waste a lot of time and money and have to take the first flight back

Is this possible? Can someone at the airport override the embassy's decision and deny me entry?

There is no legal reason for me not to visit, it's only the Iranian visa in my passport that has me concerned I may be turned back for "security reasons".