A group of Senate Democrats asked the Securities and Exchange Commission to investigate President Donald Trump and others for "potential violations of securities law" related to the president's announcement of a pause in so-called reciprocal tariffs on imports.

Democrats on Thursday requested an urgent inquiry into whether President Donald Trump, his family or members of his administration engaged in insider trading informed by advance knowledge regarding Trump's tariff policy.

Congressional Democrats are questioning whether President Donald Trump and his allies may have improperly acted on his suggestion Wednesday that it was a “great time to buy” stocks shortly before announcing he was cutting back on some of his new tariffs — a move that made the markets go up.

The dollar fell broadly on Friday as ongoing concern about U.S. tariffs undermined confidence in the currency as a safe haven, sending it to its lowest in a decade against the Swiss franc and a three-year low versus the euro.

With the dust now settled on the euphoric market rebound following President Donald Trump's trade war climb-down, investors are realizing that the global economy still faces the most punishing U.S. tariffs in nearly 100 years.

President Donald Trump's pause on some announced import taxes may have eased the stress building in financial markets for now, but leaves in place the same set of circumstances that had reset the U.S.

Wall Street's main indexes dipped in choppy trading on Friday after China increased its tariffs on U.S. imports, escalating a trade war that has hammered global markets in recent weeks, while investors assessed results from big Wall Street banks.

A day after recording its best gain since 2008, the S&P 500 fell 3.5 percent on Thursday, showing that fears about tariffs hampering economic growth were still alive.