Wall St. execs top list for Treasury nominees

McGuire would not only fit the bill on markets expertise but he would, as one of the highest-ranking blacks on Wall Street, add more diversity to the Obama administration.

The White House been criticized for nominating a more diverse group of candidates for a broad range of Cabinet and other administration jobs.

Kramer, a major donor and fundraiser for Obama, has a long career on Wall Street.

Ruth Porat, the chief financial officer at Morgan Stanley who was expected to make a run for the job, withdrew her name last week.