"It's either going to be a partial admission of guilt while trying to absolve the top level, or they'll say they haven't found anything", said Steffen Hertog, an associate professor at the London School of Economics.
Khashoggi, a Saudi national and USA resident who became increasingly critical of powerful Crown Prince Mohammed bin Salman, has not been seen since he walked into the Saudi consulate in Istanbul to sort out marriage paperwork on October 2.
Trump announced he'd dispatched Secretary of State Mike Pompeo to the kingdom - and anywhere else necessary - to get to the bottom of the apparent demise of Khashoggi, a Saudi who had been living and working in the United States. The Saudis continued to deny they killed the writer, but there were indications the story could soon change.
In Istanbul, meanwhile, investigators entered the consulate for their own investigation.
Trump said he'd made clear the stakes.
'My kind of guy': Trump jokes about USA congressman assaulting journalist
Gianforte won by a six-point margin in 2017, but still faces re-election this year. He also donated $50,000 to the Committee to Protect Journalists.
Dozens of media organisations - some of whom had set up tents - have kept a constant vigil outside the consulate in the expectation that the search would finally begin.
If the autopsy specialist left Saudi Arabia for Istanbul before Khashoggi entered the consulate, as Turkish sources have asserted, it might be hard to square with the explanation that any killing was the result of a botched interrogation, and not premeditated.
Crown Prince Mohammed bin Salman's Future Investment Initiative Conference, dubbed "Davos in the Desert", is slated to run October 23 - 25, and is part of his Vision 2030 plan to ween the kingdom off its reliance on oil.
"I believe the Trump administration will do something, the president has said that", Rubio said on CNN's State of the Union Sunday morning.
Trump also commented that he doesn't "want to get" into King Salman's mind, but said, "it sounded to me like maybe these could have been rogue killers".
Trump pulling US out of worldwide pact on postal rates
A 1-pound package that costs the USPS about $10 to deliver can be mailed from China for just $2.50, per White House numbers. The US Chamber of Commerce has said this treaty, "leads to the United States essentially paying for Chinese shipping".
Two of the officials said the search could take place as early as Monday afternoon.
Jamal Khashoggi went missing on October 2.
"I think one of the strong things that we can do is not only stop military sales, not only put sanctions on Saudi Arabia, but most importantly, get out of this awful, bad war in Yemen led by the Saudis", Sen.
The global conference, starting on 23 October, has been dubbed "Davos in the Desert", though the World Economic Forum says it has nothing to do with its annual event in the Swiss Alps.
JPMorgan Chase CEO Jamie Dimon, Ford Executive Chairman Bill Ford and Uber CEO Dara Khosrowshahi are some of the high-profile names who will no longer be attending the conference.
Canada pot stores run out of supplies, more lineups
Battley will attend an investor conference in Germany and then head to Australia, which legalised medical marijuana in 2016. While that's great for those Canadians, it doesn't mean the same thing to the American government as it does at home.
Speakers and sponsors have been abandoning the event in growing numbers.