The House of Commons' standards watchdog has recommended that Leicester East MP Keith Vaz be suspended for six months after he was found to have "expressed willingness" to purchase cocaine for others.
The committee found there was "compelling evidence" Mr Vaz had breached the House of Commons Code of Conduct by "expressing willingness to purchase a Class A drug, cocaine, for others to use, thereby showing disregard for the law."
It found Mr Vaz s explanation of the incident, which led to a police investigation in August 2016, had been "frankly ludicrous".
The complaint against Mr Vaz, who was chairman of the Commons Home Affairs Committee, followed a newspaper article from 2016 claiming he had met two men in his London flat to engage in paid-for sex.
The committee said Mr Vaz, 62 and MP for Leicester East, had failed to co-operate with the investigation and it found the evidence "to be compelling that Mr Vaz was previously acquainted with the men, that he had paid them money to engage in sexual activity with him".
It also found by "failing to co-operate fully with the inquiry process thereby showing disrespect for the House's standards system, he has caused significant damage to the reputation and integrity of the House of Commons as a whole."
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The committee said it was "a very serious breach of the Code.
"We recommend that the House should suspend Mr Vaz from its service for six months."
MPs still have to vote to approve the recommendations of the committee.
At the time, Mr Vaz claimed he was involved with an encounter with the two men to "discuss the redecoration of his flat", not to engage in paid-for sex.
He told the men he was a washing machine salesman called Jim.
He had been due to contest his seat at the next Election. It is the longest suspension of an MP since records began.
The Committee recommended Mr Vaz not be given a "former MP" pass.
His office said he had been treated for a "serious mental health condition" as a result of the events.
