Adding to the uproar over Rep. Devin Nunes’ disclosure that the communications of President Trump and his transition team may have been intercepted by American intelligence or law enforcement agents, Sen. John McCain, R-Ariz., on Thursday described Nunes’ actions as “very disturbing.” Nunes, the California Republican who heads the House intelligence committee, called a press conference Wednesday to announce that he had informed the White House that Trump transition communications may have been subject to “incidental collection” in the course of surveillance of other targets, possibly foreign. Nunes faced severe criticism from both sides of the aisle for making the...