Central to trading Wednesday was the release of the FOMC minutes. The document showed that the central bank decided to adjust its economic outlook higher in light of the Republican effort to lower the corporate tax rate. Officials expect the tax relief to bump consumer and firm expenditure.
Committee members increased their expectations for 2018 GDP growth to 2.5 percent.
Last month, the Federal Reserve raised interest rates by a quarter point and hiked its growth outlook for the U.S. economy. The FOMC is the Fed's monetary policymaking arm. The minutes largely reflected the central bank's belief in a stronger economy, improved industrial production and healthy employment.
"Obviously the Fed is a little puzzled why inflation hasn't picked up," said Charlie Ripley, senior investment strategist for Allianz Investment Management. "They did talk about taking a look at alternative methods at looking at inflation ... It feels like the Fed is looking for reasons to raise rates."
For his part, Ripley believes the central bank is likely to raise rates two to three times in 2018 despite a current lack of inflation.
On the data front, yields briefly perked up after the Institute for Supply Management's (ISM) manufacturing index came in higher than expected for December. The index increased to 59.7, topping economist expectations of 58.2 according to a Reuters poll and marking the 103rd consecutive month of growth for the industry.
A reading above 50 for the index indicates expansion in the service sector.
On Tuesday, the first trading day of 2018, U.S. markets finished trade higher with the Dow Jones Industrial Average closing up above 100 points.
U.S. government debt yields started the year higher on Tuesday.
Geopolitics continues to shake up global markets. On Tuesday evening, President Donald Trump tweeted that that his "nuclear button" was "much bigger and more powerful" than the one controlled by North Korea's leader Kim Jong-un.
The U.S. incumbent's tweet comes after a New Year's Day address from Jong-un, who said that the isolated state's nuclear weapons could reach anywhere in the U.S.
Despite the rising geopolitical tensions, indexes in Asia and Europe traded higher on Wednesday. U.S. futures also traded higher.