The Supreme Court gave a lower court in Washington, D.C., on Monday the monumental task of determining what acts are official and unofficial in the election interference case against former President Donald Trump.

The high court’s 6-3 decision along ideological lines was a massive victory for Trump, as it found that presidents cannot be prosecuted for actions they took in their official capacity unless the Department of Justice can prove the prosecution will not threaten the authority of the executive branch as a whole.