This is the best summary I could come up with:

Two House committees voted on Wednesday along party lines to hold Hunter Biden, the president’s son, in contempt of Congress, hours after he surprised Republicans by appearing unannounced on Capitol Hill, prompting a partisan free-for-all.

The day began with a dramatic twist: the unexpected arrival of the younger Biden, who has repeatedly offered to testify publicly in the impeachment inquiry but refused to be interviewed behind closed doors, in the Oversight Committee’s hearing room.

The exchange pitted some of the staunchest supporters of former President Donald J. Trump against the son of his successor and chief political rival, underscoring the bitter polarization that is driving the impeachment investigation.

As Representative Marjorie Taylor Greene, Republican of Georgia, was beginning to lecture Mr. Biden, he and his entourage left the room just minutes after arriving, trailed by a gaggle of journalists who had gathered to watch the G.O.P.’s latest move.

Republicans are hunting for evidence that his father was inappropriately involved in his foreign business dealings, and are working to build a case for charging the president with bribery and corruption, but have so far turned up no proof of either.

Outside the Oversight Committee room, a circuslike atmosphere greeted Mr. Biden and his legal entourage as they made their way out of the meeting, with a throng of news cameras jostling for position and journalists shouting questions.

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