White House legislative affairs director Marc Short is planning to leave his job ahead of the 2018 midterms, The Wall Street Journal reported Thursday.

Sources told the Journal that Short is planning on departing the White House sometime this summer, citing “diminishing returns” on getting President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE’s legislative goals through Congress ahead of the November elections.

When the Journal asked Short for comment, he replied, “There are so many leaks in this building.”

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The New York Times’s Maggie Haberman and The Washington Post’s Josh Dawsey also tweeted Thursday that White House officials told them Short will leave ahead of the November elections.

Short has been one of the most visible and lasting members of Trump’s White House since he joined the administration in January 2017. He worked with Vice President Pence during the 2016 campaign.

As the White House's top aide in advancing Trump's agenda through Congress, Short has frequently appeared on news shows to defend the administration's legislative priorities.

Short has worked with lawmakers on agenda items such as passing the GOP tax-cuts bill in December. However, the White House has struggled to get its other legislative goals through the GOP-controlled Congress.