After weeks of speculation about further sanctions by the United States on Bangladesh, presumably on allegations of human rights violations and demands for free and fair elections, the cat finally came out of the bag. There were no new sanctions against the country or any specific agency in the country.
What was revealed was a non-specific, yet very wide application of a visa policy that would bar individuals or officials, including those in political parties of Bangladesh, from entering the US – who would be deemed to have used their influence or authority to rig or manipulate elections in the country. The policy is wide reaching and can be interpreted to mean that any individual, whether in government or politics, engaged in electoral malpractice can be denied entry into the United States.
On the face of it, permission to enter into a country is a privilege granted by the host country to any foreigner. It can decide who it will grant this privilege to and who it will deny. As a would-be-visitor, anyone can expect any result. You cannot go to court if you are denied the request. If the US has a visa policy that articulates a set of principles that decides.