“…For the United States, this evidence includes Eichengreen and Bayoumi (1994) and Bayoumi, Goldstein, and Woglom (1995), who report that constitutional restraints to borrowing reduce the costs of borrowing by U.S. states; Poterba andRueben (1999a, 2001) who find that rules on U.S. states' expenditure, deficits, and debt reduce their borrowing costs except when a state also imposes limitations on the ability to raise taxes; Poterba and Rueben (2001) find that a sudden increase in the fiscal deficit raises state financing costs, but that the rise is smaller if the state has a strict fiscal rule; and Johnson and Kriz (2005) find that numerical fiscal rules reduce borrowing costs but that the effect operates indirectly by improving credit ratings. For European countries, the evidence includes Iara and Wolff (2014), who report that numerical rules only impact on borrowing costs of euro area countries at times of market stress; Heinemann, Osterloh, and Kalb (2014) who find that the impact of numerical rules on euro area countries is less important once historical fiscal preferences are considered; and Feld et al (2013) who find a robust negative effect of fiscal rules on bond spreads for Swiss cantons.…”