Video above: Supreme Court census case about ‘political power’The swanky, billion-dollar casinos of Las Vegas are bedecked with shining towers, neon signs and eye-popping extravagance. But directly beneath the glitter, hundreds of homeless people live out of sight, in the dark, in a network of stormwater tunnels running below the city.When census takers tried in September to count the nation’s homeless for the 2020 census,