Obama administration officials scrambled Friday to hunt down copies of a new book scheduled to be released next week that paints an unflattering portrait of a dysfunctional and acrimonious White House that sometimes stymied President Obama’s effort to rescue the country’s economy. The book, “Confidence Men: Wall Street, Washington and the Education of a President,” by journalist Ron Suskind, comes at an inconvenient time for an administration that increasingly finds itself on the defensive over questions of effectiveness. The Washington Post obtained a copy of the book Friday.