David Sorensen, a speech writer who worked under senior policy adviser Stephen Miller, abruptly resigned and left his job Friday, according to The Washington Post.
United States media report that Mr Kelly and other White House officials were aware for several months of the domestic abuse accusations because they were holding up Mr Porter's security clearance application.
However, although senior White House staff were aware of the domestic abuse allegations by Porter's ex-wives, they did not know the full extent of the claims, senior administration officials said.
He said in a statement he "never committed violence of any kind against any woman" and said he was "the victim of repeated physical violence" during his marriage to Corbett.
In a letter addressed to White House Chief of Staff Gen. John Kelly and White House Counsel Don McGahn, 12 Democratic senators led by Sen.
It is alleged that the former White House staff secretary gave one ex-wife a black eye while another filed a restraining order.
Comedian Dean Obeidallah said: "It sends a disturbing and powerful message to women across America that Trump Defended Rob Porter and wished him well". She revisited the accusations that Trump himself has sexually harassed women, allegations he has denied. Former New Jersey Republican Gov. Christine Todd Whitman tweeted: "The fact that @realDonaldTrump praised Porter and said not a word about his abusive behavior or his former wives is typical of the WH attitude toward women and abuse".
'Central Park Five' Trump has been less supportive of "due process" in the past. Speaking to reporters on Friday, Trump said he and the rest of the White House "certainly wish [Porter] well" and acknowledged that "it's obviously a very tough time for him".
Later, on Wednesday evening, Kelly issued a new statement saying he was "shocked by the new allegations", adding "there is no place for domestic violence in our society". Laudatory Statements The episode has also cast a shadow over communications director Hope Hicks, the longtime Trump aide who was dating Porter when the allegations emerged.
Kelly's claim Tuesday that some immigrants are "too lazy to get off their asses" and register for government protections stunned some aides who questioned the chief of staff's political instincts and were dismayed by his language.
The White House claims that the backlog of interim security clearances is a effect of the review process carried out by the Federal Bureau of Investigation and White House Office of Security, which can take time to complete.
In November, one of Mr Porter's ex-girlfriends called Mr McGahn to describe allegations of domestic abuse against him.
Last Friday, Kelly made it clear that he would resign if the President wanted him to, a source with knowledge of the matter told CNN.
"White House chief of staff John Kelly must resign", said Van Pelt.
Colbie Holderness, Porter's first wife, shared photos with CNN that she said were taken after he allegedly punched her in the face in 2005.
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