Renewable-energy stocks fell, after President Trump issued an executive order calling for tight application of the eligibility rules for clean-energy tax credits. Shares in solar-equipment maker First Solar fell about 5% in morning trading Tuesday,

A new executive order further lowers government support for renewable power. Stocks including First Solar and Enphase Energy dropped on Tuesday.

The dollar traded close to a 2-1/2-week high versus major peers on Wednesday while copper hit an all-time peak overnight after U.S. President Donald Trump broadened his global trade war by threatening a 50% tariff on the metal.

Wall Street on Tuesday fluctuated just under record levels as uncertainty over trade developments again put pressure on sentiment, a day after a broad sell-off. U.S. President Donald Trump announced on Tuesday a 50% tariff on copper imports during a Cabinet meeting,