The Internal Revenue Service's Criminal Investigations (IRS-CI) division for the second straight year began fewer investigations and sought a smaller number of prosecutions for money laundering, terrorist financing and other financial crimes, the agency said Thursday. In a 49-page annual report, the division said that after a period of several years in which it initiated more and more cases, it began only 3,853 investigations in fiscal year 2015, a 10 percent drop from last year's numbers and nearly 30 percent less than the 5,314 investigations IRS-CI commenced in 2013. IRS-CI chief Richard Weber attributed the decline in enforcement to staffing...