I am looking for the levels of barriers of trade between the US and
other countries.

My understanding is that tariffs are part of the story while import
quotas are another part of the story.

I also wonder if there are US capital regulations which make it easier
for people in one country to raise capital to export goods to the US
than people in another country.

Lastly I wonder about technology restrictions - do businesspeople of
every country have equal access to US technology.

So my question is if you that is you would compare three countries,
one with good relations, one with neutral relations and one with bad
relations with the US, what specific policies influence their ability
to export goods to the US and import capital and technology from the
US.

I'd like the answer to focus on Israel as a country with good
relations, Ghana as a country with neutral relations and Iran as a
country with bad relations.

What US government policies would impact a businessperson in each
country if that business person wants to A) Manufacture t-shirts to
sell in the US market B) Build a power plant inviting US investors to
participate and C) Build an aspirin factory accessing US technology
and patents.

For those three examples and those three countries (Israel, Ghana and
Iran) I am asking for specific tariff levels and the effect of any
quotas.  I am also asking about any and capital or technology
restrictions that have some relation to US government policy.

For my purposes agreements between the US and the host country that
are implemented by the host country count as US policy but the private
consumption or investment preferences of US citizens do not count as
US policy.