Anticipates 'modest' impact of tax overhaul on growth, with few businesses in recent survey saying they expect to expand investment or hiring as a result
Concerned public may lose faith in commitment to 2 percent inflation goal, sees it as possible argument for being more patient with future rate increases
Says lack of wage and price pressures remains "puzzling" in light of low unemployment
Current Federal Funds rate of between 1.25 percent and 1.50 percent could already be "approaching" a neutral rate that could be "close to" 2 percent