“Wie kann die Wettbewerbsfähigkeit Europas wieder hergestellt werden?,” ifo Schnelldienst 4/2015, February 26, 2015. PDF.

• “More Europe” to address important cross-border external effects or public goods—but not otherwise.
• Subsidiarity and fiscal equivalence.
• European institutions as guardians of the rule of law, economic freedom and consumer rights.