By Mike Dolan Jan 28 - What matters in U.S. and global markets today By Mike Dolan, Editor-At-Large, Finance and Markets The dollar managed to get a toehold on Wednesday after a withering drop to a four-year low overnight. President Donald Trump appeared to embrace the move, saying the ​dollar was "great." This adds to growing market speculation that the administration wants a more significant depreciation of what it sees as an overvalued ‌currency. Markets will immediately wonder if that tallies wit ...