Rep. Adam Schiff (D-CA) made a last-minute effort Wednesday evening to block the release of a highly-anticipated House Intelligence Committee memorandum that is expected to allege that the Obama administration abused the federal government’s surveillance powers to spy on Donald Trump’s political campaign. The committee voted along party lines on Monday to release the memorandum to the public, subject to final approval by the president. Schiff, the ranking member of the Democratic Party minority on the committee, tweeted that committee chair Rep. Devin Nunes (R-CA) had “made material changes to the memo he sent to White House.” Because these changes...