Prices of U.S. Treasuries were mixed.
The Dow Jones Industrial Average swung from a triple-digit loss to a triple-digit gain, last trading 23 points, or 0.1%, lower at 25,003.
Trump announced on Thursday he would impose heavy tariffs on imported steel and aluminium to protect USA producers, risking retaliation from major trade partners such as China, Europe and Canada.
Which stocks look like key movers?
But many stocks fell on concerns industry inputs would be as the cost of imported steel and aluminum rose, pushing up costs for consumers also.
The market reaction was uneven.
YouTube Hiring for Some Positions Excluded White and Asian Males, Lawsuit Says
According to Google's own statistics , the company's USA workforce is 56 percent white, 35 percent Asian and 69 percent male. Wilberg, who spent nine years at Google before he was sacked last November, worked as a YouTube recruiter for four years.
In addition, reports covering USA auto sales for February are scheduled to roll in throughout the day.
The US Dollar took a turn for the worse as Powell testified.
"This is a continuation of where this Fed was under Chair Yellen", said Robert Albertson, principal and chief strategist at Sandler O'Neill & Partners in NY.
Chuck Carlson, chief executive at Horizon Investment Services in Hammond, Indiana said the market is nervous about future USA inflation and the imposition of tariffs may accentuate those concerns. The Cboe Volatility Index jumped to a more than two-week high. The euro, British pound and yen all rose versus the greenback, which pared earlier gains.
Looking ahead to 2018, the French automaker anticipates a stable automotive market in Europe, and growth of 4 percent in Latin America, 10 percent in Russian Federation and 2 percent in China.
"Bonds are providing a nice shock absorber here", said Gene Tannuzzo, a portfolio manager at Columbia Threadneedle Investments.
No. I think we're experiencing a hysteresis effect in global groupthink, led by the Fed, believing that we can depress term and risk premia without consequences for inflation or financial stability. "With Australian bond yields no longer higher than United States bonds, it no longer has the attraction it used to have for a long time".
Injured Neymar set to miss Real Madrid match
The Qatari-owned club are trailing Madrid 3-1 from the first-leg. " No, I don't like it when players get injured ", Zidane said. Neymar was stretchered off amid Paris Saint-Germain's 3-0 prevail upon Marseille on Sunday since the contort to his lower leg.
Federal Reserve chairman Jerome Powell, in his first public appearance as head of the USA central bank, vowed to prevent the economy from overheating while sticking with a plan to gradually raise interest rates. Powell's comments that the US economy had strengthened and that inflation would rise to its target led market participants to consider the prospects of the Fed raising rates more than three times in 2018, as was projected at the December meeting.
"Indeed, the economic outlook remains strong", Mr Powell said. Right now the Fed has signaled three quarter-point rate hikes for 2018, the first likely to come at the next Fed meeting in March. Against that backdrop it seems reasonable to ask the question as to whether the U.S. economy can absorb up to a 1% increase in the Fed funds rate by year end.
The Fed Chairman was careful not too explicitly comment on the particulars of the tax bill's effect on large stock buybacks implemented by corporations.
UK Prime Minister Theresa May delivers a speech Friday on Britain's relationship with the European Union. The S&P 500 fell 1 percent; real estate, consumer discretionaries and utilities weighed the most on the index.
The AUD/USD pair slid 0.43 percent to 0.7728.
The MSCI All-Country World Index declined 1 percent.
In Europe, stock indexes were mixed with France's CAC 40 close to flat and Germany's DAX down 0.3 percent. Eastern time. It had been up as much as 0.6 percent earlier in the day. The USD/CNY exchanged hands at 6.3408, 0.17 percent higher.
Oil drops on surprise U.S. gasoline stocks build; crude stocks also up
April WTI crude oil futures settled at $63.91, up $0.36 or +0.57% and April Brent crude oil closed at $67.50, up $0.19 or +0.28%. The market was also supported by data showing US crude stockpiles fell more than expected earlier this month.
YIELDS: The 10-year Treasury note dipped to 2.88 percent from 2.90 percent late Tuesday.