But some analysts speculated that for Google's Eric Schmidt the trip could have more strategic reasons.
It did not single out Huawei or ZTE, but many have speculated the move was motivated by the US stance.
He can appeal the decision to the Supreme Court, but legal experts speculated that chances the decision would be overturned were remote.
But analysts have speculated the company may be encountering shortages of some components, including displays or some chips used in the new handset.
The biological reasons for why this may be are unclear, but the researchers speculated that potential chromosomal abnormalities in the eggs of older women and mutations in the sperm of older men may be a factor.
Police have yet to declare the death a suicide or murder, but newspapers immediately speculated that it may have been linked to the fight for control of the family fortune, which has left three members killed and one missing over the last three decades.
The grand jury that has convened in Alexandria, Virginia to decide whether Assange will be indicted in the U.S. has yet to make public any charges against him, but some have speculated on and called for his indictment under the same Espionage Act once used to prosecute Daniel Ellsberg for leaking the Pentagon Papers.
The source of the fire has still not been pinpointed, but it was widely speculated that a group of oxygen generators in the cargo hold may have caused or contributed to a blaze in the cargo hold of the DC-9.
Apple would not say why it had left the green certification system, but it was widely speculated that its new line of MacBook Pro laptops, which had not been reviewed by EPEAT, might be too difficult to recycle to earn the certification.
But Kenyan and Israeli officials speculated that Osama Bin Laden's al-Qaeda network might have been responsible.
He said he could not speculate as to why Norway was on the list, but news media in the country speculated that al-Zawahri may have confused Norway with neighboring Denmark.
There was a time when I might have speculated on the cause but then I learned that rather than continuously update my priors I should instead consider every piece of evidence in isolation and adhere strictly to the absolutely non-arbitrary standard of a 95% confidence interval.
But the liability is far less than speculated in the market, with rumors circulating that the group's investment arm was nursing a much larger black hole in its finances.
The pharmacy manager explained to me that neither gemfibrozil nor Vicodin was actually dispensed by human pharmacists but by a robot, and she speculated that the robot must have filled my prescription (with gemfibrozil) and then gone on to the next prescription (Vicodin), somehow putting both kinds of pills into the same vial.
Troops have speculated about the issue for a while, but Zinda, who is a career counselor, said she has yet to have a female soldier approach her about joining a combat unit.
CNN: Former troops say time has come for women in combat units
Many commentators have speculated that the Ares 1 will be cancelled, but they suspect Orion will live on, perhaps launching on a vehicle with a design which relies more heavily on space shuttle technology.
Doctors speculated he might return to the mound at some point, but were wary he might never pitch again.
His father has not speculated on the reasons for his son's death, but family members including his grandfather suspect foul play.
BBC: Souvik Pal: Indian student's body cremated in Bangalore
People have speculated about what a new owner of the Dodgers will do, but they'll get there and have to assess the situation, and they'll be limited somewhat by what the choices are on the market.
But the poll also shows continued concern over job security, and Mr. Hart speculated that if unemployment numbers rise, the public mood will fall again.
Some people have speculated Venezuela will not be ready to organize the vote in time, but elections council chief Tibisay Lucena said the country's electronic voting system was fully prepared.
But with his comments on gays making headlines around the world, the Polish press has speculated that invitations to speak may soon dry up.
Not that we'd put it past Microsoft or anything, but we can already smell a rumor brewing where there is probably none regarding the long-speculated and continuously denied plans to integrate an HD DVD drive into the Xbox 360.
This plea has been brewing for some time and now he has finally been beaten, not by the opposition bowlers, a wilting body or the pressure of the media storm but by his eight-year-old daughter who obviously holds more weight than any of the standard or speculated reasons for him finishing.
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