Its list of Russian officials barred from entering the United States has not been made public, but some government figures prefer not to apply for a visa to avoid the humiliation of being rejected.
Trade Secretary Gregory L. Domingo said this week that the government is preparing legislation that would cut the length of the negative investment list of industries from which foreigners are barred.
The EU squeezed Mr Mugabe harder this week by adding 27 Zimbabwean officials and 36 companies to a black list, with assets frozen and travel in Europe barred.