Ben Cardin quotes:

In Serbia's case, the unresolved accountability for the Bytyqi brothers massacre needs to be resolved. And we would urge you to give this matter prompt and immediate attention to bring those responsible to justice for this tragedy.

[The Bytyqi Brothers were] American citizens and we have been seeking answers to why no one's been held accountable for these atrocities. [Family members] expect our government to do everything we can.

Now that Serbia is moving towards integration into Europe, the opportunities to get closer cooperation may very well exist.

[N]o clear steps have actually been taken to apprehend and prosecute those known to have been in command of the camp or the forces operating there....The new government of Prime Minister Aleksandar Vucic has pledged to act. It must now generate the political will to act. The protection of those responsible for this crime can no longer be tolerated.