The Government of Venezuela withdrew a number of years ago from the Inter-American Convention on Human Rights, which means that technically we could go only to the commission, which is part of the OAS charter, but we could not go to the court, which has the ability to issue binding decisions. There is no easy route forward.
What's somewhat ironic here is that when the Government of Venezuela withdrew from the Inter-American Convention on Human Rights a few years ago, it was in part because of the adverse decision against them on Leopoldo López' political disqualification case, which they lost in the Inter-American court. They said that they found the Inter-American system to be biased against them and that they would increase their cooperation with the UN system, in particular with the UN Human Rights Council, because they found them to be more objective, more reasonable, and more consistent with their views and their interests. They said that they would increase cooperation with the council and the treaty bodies that oversee implementation of international treaties.
Now, of course, they're saying that they are not going to cooperate with the decision of the Working Group on Arbitrary Detention, which is contrary to what they themselves said in writing as an explanation for why they withdrew from the Inter-American convention.