In May 2005, McCain led the so-called Gang of 14 in the Senate, which established a compromise that preserved the ability of senators to filibuster judicial nominees, but only in "extraordinary circumstances". The compromise took the steam out of the filibuster movement, but some Republicans remained disappointed that the compromise did not eliminate filibusters of judicial nominees in all circumstances. McCain subsequently cast Supreme Court confirmation votes in favor of John Roberts and Samuel Alito, calling them "two of the finest justices ever appointed to the United States Supreme Court."