All-star cast of climate deniers fills Trump cabinet Trump chooses climate skeptics to lead agencies charged with monitoring global warming; China worried by Taiwan remarks; Facebook's very bad year Oklahoma attorney general Scott Pruitt, Trump's choice to lead the EPA, has claimed scientists disagree about the causes of global warming. Photograph: Nick Oxford/Reuters Mazin Sidahmed Trump worries China The Chinese government has warned Donald Trump it is "seriously concerned" after the president-elect brought into question the historic "One-China" policy, agreed by Richard Nixon and Mao Zedong in 1972, during an interview with Fox News. Trump questioned the necessity of the policy, under which the US does not recognize Taiwan as a sovereign state, and argued that it might be used as a bargaining chip in a trade deal with China. "I don't know why we have to be bound by a 'One China' policy unless we make a deal with China having to do with other things, including trade," said Trump. Geng Shuang, a spokesman for China's foreign ministry, told reporters that bilateral ties and "the sound and steady growth of China-US relations" would be "out of the question" were Trump to turn away from the "One China" policy. He referred to the issue as the "political bedrock" of the ties between the two countries. China 'seriously concerned' after Trump questions Taiwan policy Trump clashes with CIA over Russia The CIA's conclusion that Russia interfered with the 2016 presidential election is "ridiculous", Trump told Fox News on Sunday. The president-elect said the CIA's assessment was "just another excuse" for his stunning defeat of Hillary Clinton last month. The Washington Post reported on Friday that the CIA had concluded that the Russian government had attempted to influence the election by hacking the Democratic National Committee and passing emails to WikiLeaks. The New York Times reported that the Russians had also hacked into the Republican National Committee's computer systems, but that they did not release the information they gained from the GOP. Trump claimed that it was impossible to trace the source of the DNC hack: "Once they hack, if you don't catch them in the act you're not going to catch them. They have no idea if it's Russia or China or somebody. It could be somebody sitting in a bed some place." Trump also criticized the US intelligence community ("These are the same people that said Saddam Hussein had weapons of mass destruction") and said he was going to skip most of the daily intelligence briefings because they were so repetitive, instead leaving them to vice-president elect Mike Pence. Legislators overseeing the CIA and other intelligence agencies have told the Guardian they will be vigilant about reprisals from the incoming president. Donald Trump says CIA charge Russia influenced election is 'ridiculous' Trump's team of climate change deniers Trump is assembling an all-star cast of climate change deniers for his transition team – often placing them at the heads of key agencies responsible for monitoring or dealing with global warming. The heads of transition teams for Nasa, the Environmental Protection Agency, the Department of the Interior and the Department of Energy, as well as his nominees to lead the EPA and the Department of the Interior, are all skeptical of the science of human-caused climate change. For instance, Myron Ebell, head of the EPA transition team, has said that the scientific consensus on climate change is "phoney", while another member of the team David Kruetzer, of the conservative Heritage Foundation, has erroneously claimed there has been "global cooling" in recent years. Trump's transition: skeptics guide every agency dealing with climate change Facebook's year in review This has been a rollercoaster year for Facebook and its founder Mark Zuckerberg. The Silicon Valley giant raked in record profits thanks to increased advertising revenue but faced criticisms in a range of areas. Hollowing out legacy media's revenues while using its content, "digital colonialism" and issues of censorship have plagued the company in 2016. However, Facebook's impact on the US election may have been been most stinging, with Barack Obama among many claiming that it undermined the political process. Despite originally denying responsibility, Zuckerberg later wrote an apology and outlined attempts to tackle the problem. García Martínez, who used to work in Facebook's advertising sales department, told the Guardian that Facebook is well aware of its impact and uses it as key selling point to advertisers. "We used to joke that we could sell the whole election to the highest bidder." 2016: the year Facebook became the bad guy Latinos patrolling the border Trump campaigned on a promise to build a wall across the US-Mexico border, that he said would keep out Mexicans, who he referred to as "rapists" and criminals. But he will rely on thousands of federal employees of Mexican heritage to enforce any crackdown. Rory Carroll meets one of them. Life as a Mexican American on the Border Patrol: 'The system is not broken' Teen Vogue takes on Trump Hannah Jane Parkinson notes that Teen Vogue has emerged as one of the strongest progressive voices against Trump. An op-ed by Lauren Duca that went viral over the weekend is a continuation of a series of pieces by Teen Vogue on the incoming administration. Parkinson credits Elaine Welteroth, Conde Nast's youngest editor, for the success of the magazine. Who will take on Donald Trump? Teen Vogue Guns in stadiums? Republican representatives in the state of Washington have proposed a bill that would let sports fans bring guns into stadiums. The bill would prevent stadium operators from stopping people with a concealed carry license to bringing their firearms into stadiums. The NFL opposes the bill, which will face strong opposition due to the state's strong Democratic base. Fans could bring guns into stadiums under proposed bill in Washington In case you missed it … A restaurateur in Toronto opened his doors to a group of Syrian refugee women to cook for the community. The opportunity has helped them find purpose in the strange city. Manage your emails | Unsubscribe | Trouble viewing? You are receiving this email because you are a subscriber to Guardian US Briefing. Guardian News & Media Limited - a member of Guardian Media Group PLC. Registered Office: 222 Broadway, 22nd and 23rd Floors, New York, New York, 10038