Bolstered by the backing of key watchdog groups, top GOP oversight official Rep. Darrell Issa is pressing House oversight committee Chairman Edolphus Towns to help investigate a mounting number of technology-related ethics problems for a White House that has prided itself on both transparency and its technological savvy. Issa’s latest move is a June 30 letter to Towns requesting the chairman join Issa in “launching a formal investigation” into numerous allegations the Obama White House has played fast and loose with its ethics rules and disclosure requirements under federal law. The letter comes two days after Washington-based watchdog group Citizens...