TEL AVIV — A four-page House Intelligence Committee memo alleging abuse of surveillance authority raises immediate questions about the decision by former FBI Director James Comey to brief Donald Trump and then-President Barack Obama on the contents of the infamous, largely discredited 35-page anti-Trump dossier. The memo relates that in early January 2017, prior to Trump’s inauguration, Comey briefed then President-Elect Trump and Obama on the dossier even though months later Comey would label the dossier as containing “salacious and unverified” material. Critically, the memo relates that, after dossier author Christopher Steele was terminated months earlier as an FBI source,...