White House senior adviser Jared Kushner (L), White House chief of staff John Kelly (C) and White House staf secretary Rob Porter look on after US President Donald Trump signed a proclamation calling for a national day of prayer on September 3 for those affected by Hurricane Harvey in the Oval Office at the White House in Washington, DC, on September 1, 2017. / AFP PHOTO / NICHOLAS KAMM        (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
Allegations of abuse in Trump White House
03:05 - Source: CNN
Washington CNN  — 

The resignation of White House staff secretary Rob Porter after accusations that he abused both of his ex-wives raised lots – and lots – of questions about who knew what and when, and why no one acted before pictures emerged of his then-wife with a black eye.

Below are six questions the White House needs to answer about this whole mess.

1. Who knew about this?