The ECLJ intervenes as amicus curiae in this case pending before the Inter-American Court of Human Rights.
The problem is not new - it is the long-standing tendency of the Open Society Foundations (George Soros to you and me) to be involved in funding judicial appointees who then participate in cases which are by no means unrelated to the policies of the Foundations, leading many to feel that the impartial judgement of the court may be compromised by a conflict of interest. The ECLJ has reported on similar situations in European courts.
This is a well recognised age-old problem for which the very phrase "conflict of interest" was devised.
The tradition in courts is of course for such persons to recuse themselves from the proceedings, although if the court itself receives such funding it is difficult to see how such conflict could be avoided.