(CNN) Rob Porter was involved in serious discussions to be promoted when he abruptly resigned from the White House last week amid allegations that he abused his two ex-wives, multiple sources familiar with the matter tell CNN.

His anticipated elevation further highlights how top White House officials were willing to overlook indications from the FBI that there were potential abuse allegations in his background in exchange for professional competence in a tumultuous West Wing.

Porter had been actively lobbying to take on new policy portfolios outside the traditional scope of the staff secretary, one person familiar with the matter said, which included speechwriting duties and a role in planning policy rollouts. Neither of those tasks is traditionally carried out by the staff secretary.

One of the areas Porter was set to delve further into was trade policy, according to the person. Porter was a regular attendee at a weekly trade meeting among top-level administration officials.

He was also being considered for the deputy chief of staff position, another source familiar with the situation said. CNN reported Friday that Jim Carroll, who served as the deputy chief of staff for less than three months, was stepping down to helm the Office of National Drug Control Policy.

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