The leading figures in the controversial partnership between Saudi Arabia and the PGA Tour have been summoned to attend a United States Senate hearing next month.

PGA Tour commissioner Jay Monahan, Saudi Arabia's Public Investment Fund (PIF) governor Yasir Al-Rumayyan and LIV Golf CEO Greg Norman have been asked to appear at a Permanent Subcommittee on Investigations meeting on 11 July to examine the Tour's shock unification with LIV Golf.

The PGA Tour announced a fortnight ago it was creating a new commercial entity with the DP World Tour and PIF, a move it said would "unify golf" and which brought an end to a legal dispute between the PGA Tour and LIV Golf.

The surprise merger has attracted criticism, with the Senate announcing it would open an investigation, which has been followed by this announcement of the hearing.

Last week the PGA Tour said under-fire commissioner Monahan is "recuperating from a medical situation".

Senator Richard Blumenthal, who chairs the committee, said in a statement posted on his Twitter account: "Our goal is to uncover the facts about what went into the PGA Tour's deal with the Saudi Public Investment Fund and what the Saudi takeover means for the future of this cherished American institution and our national interest.

"Americans deserve to know what the structure and governance of this new entity will be. Major actors in the deal are best positioned to provide this information and they owe Congress - and the American people - answers in a public setting."

Meanwhile the US Open is returning to Los Angeles, with Riviera Country Club selected to host the major in 2031.

Riviera, in the Pacific Palisades part of the city, will welcome the 131st US Open Championship from 12-15 June, 2031.

The region hosted its first US Open since 1948 last weekend at the Los Angeles Country Club.

Riviera is an annual stop on the PGA Tour, hosting The Genesis Invitational.