(NBC News) The resignation of Gary Cohn, President Trump's chief economic adviser, rattled markets Wednesday as fears of a global trade war grew.
Cohn was vocally opposed to President Trump's planned tariffs on aluminum and steel.
The White House is playing down concerns of a trade war.
"We expect the President will sign something by the end of the week, and there are potential carve-outs for Mexico and Canada based on national security, and possibly other countries as well," said White House Press Secretary Sarah Sanders.
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