Rudy Giuliani, former mayor of New York, smiles during the Republican National Convention in Cleveland on July 18, 2016.

Rudy Giuliani, former mayor of New York, smiles during the Republican National Convention in Cleveland on July 18, 2016.

Rudy Giuliani, former mayor of New York, smiles during the Republican National Convention in Cleveland on July 18, 2016.

Rudy Giuliani, former mayor of New York, smiles during the Republican National Convention in Cleveland on July 18, 2016.