Mueller report

House Judiciary Committee subpoenas Rob Porter

 White House Chief of Staff John Kelly and Staff Secretary Rob Porter
Former White House chief of staff John Kelly (L) and former staff secretary Rob Porter. Photo: Jabin Botsford/The Washington Post via Getty Images

The House Judiciary Committee subpoenaed former Trump administration aide Rob Porter on Monday to testify in its probe regarding possible obstruction of justice by President Trump.

Why it matters: Porter was a key witness for the obstruction portion of former special counsel Robert Mueller's investigation. He resigned from the White House last year after his 2 ex-wives came forward with abuse allegations. Porter may never have to face the committee as the White House has moved to block other former surrogates from testifying before the House Judiciary.

The impeachment slow-drip

Nancy Pelosi. Photo: Chip Somodevilla / Staff/Getty Images

The number of House Democrats who have publicly expressed support for an impeachment inquiry has quietly crept up to 117 — an average of one a day for the month of July that brings the caucus one short of a majority, just in time for August recess.

Why it matters: The slow-drip of lawmakers joining the impeachment fray, boosted in waves by the Mueller hearings and President Trump's racist outbursts, disguises the reality that momentum has tilted squarely in favor of a formal inquiry.