Wall Street keen for a fellow traveller at Treasury

By Dan Burns and Jennifer Ablan NEW YORK (Reuters) - With President-elect Donald Trump promising to spend as much as half a trillion dollars on infrastructure and slash taxes – initiatives that could add dramatically to the U.S. debt and balloon the budget deficit - Wall Street is far more focused on who will next head the U.S. Treasury than it was in the previous selection process under President Barack Obama. Unlike current Secretary Jacob Lew, who assumed the role in early 2013 with lit