A couple of excerpts, the first on the economic impact of the new tax law, and the second on the yield curve.
From the Fed: Minutes of the Federal Open Market Committee, December 12-13, 2017:
Many participants judged that the proposed changes in business taxes, if enacted, would likely provide a modest boost to capital spending, although the magnitude of the effects was uncertain. The resulting increase in the capital stock could contribute to positive supply-side effects, including an expansion of potential output over the next few years. However, some business contacts and respondents to business surveys suggested that firms were cautious about expanding capital spending in response to the proposed tax changes or noted that the increase in cash flow that would result from corporate tax cuts was more likely to be used for mergers and acquisitions or for debt reduction and stock buybacks.
…
Meeting participants also discussed the recent narrowing of the gap between the yields on long- and short-maturity nominal Treasury securities, which had resulted in a flatter profile of the term structure of interest rates. Among the factors contributing to the flattening, participants pointed to recent increases in the target range for the federal funds rate, reductions in investors’ estimates of the longer-run neutral real interest rate, lower longer-term inflation expectations, and lower term premiums. They generally agreed that the current degree of flatness of the yield curve was not unusual by historical standards. However, several participants thought that it would be important to continue to monitor the slope of the yield curve. Some expressed concern that a possible future inversion of the yield curve, with short-term yields rising above those on longer-term Treasury securities, could portend an economic slowdown, noting that inversions have preceded recessions over the past several decades, or that a protracted yield curve inversion could adversely affect the financial condition of banks and other financial institutions and pose risks to financial stability. A couple of other participants viewed the flattening of the yield curve as an expected consequence of increases in the Committee’s target range for the federal funds rate, and judged that a yield curve inversion under such circumstances would not necessarily foreshadow or cause an economic downturn. It was also noted that contacts in the financial sector generally did not express concern about the recent flattening of the term structure.
emphasis added