Possible Clues:

• "There oughta be ---!"
• What there oughta be?
• There oughta be one, so it's said
• ''There oughta be __''
• ''There ought to be ___''
• "___ unto itself"
• 1989 bestseller about the IRS, "___ Unto Itself"
• 'Isn't there ___ against that?'
• "There ought to be —"
• Impostor