Wall Street stocks were lower on Thursday, with the Nasdaq on track for a correction, weighed down by market jitters over the current uncertainty surrounding U.S. trade policy. President Donald Trump announced on Thursday that goods from Mexico covered by the U.S.-Mexico-Canada trade agreement (USMCA) will be exempted for a month from the 25% tariffs imposed earlier this week. The development comes a day after Trump exempted automotive goods from the tariffs.