Definition: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: Special counsel Robert Mueller Robert Swan MuellerSasse: US should applaud choice of Mueller to lead Russia probe MORE is reportedly looking into a payment that a Ukrainian steel magnate made to President Trump Donald John TrumpTrump: I'd only rejoin Pacific trade pact if deal was 'substantially better' GOP unveils mock cover of Comey book with ‘ego’ attack NY Daily News cover hits Trump over Comey book revelations MORE's foundation in exchange for a 20-minute video appearance to a conference. 
  
 The New York Times reported Monday that Mueller is investigating the $150,000 donation to the Donald J. Trump Foundation that Ukrainian billionaire Victor Pinchuk made in September 2015, while Trump was seeking the GOP nomination for president. 
  
 The payment came after Trump spoke through a video link to a conference in Kiev, according to the Times. 
  
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 Mueller subpoenaed the Trump Organization for documents last month as part of his ongoing probe into Russian meddling in the 2016 presidential election. The subpoena reportedly involved documents related to Russia and other topics. 
  
 News that Mueller is looking into Pinchuk's donation comes a week after it was reported that the special counsel has questioned a trio of Russian oligarchs over whether they illegally sent cash donations to Trump's campaign or inauguration. 
  
 The Pinchuk's donation was allegedly solicited by Trump's personal lawyer, Michael Cohen, whose offices were raided by the FBI on Monday. 
  
 In Monday's raid, federal agents reportedly seized communications between Cohen and Trump, tax documents and records related to Cohen's $130,000 payment to adult-film star Stormy Daniels in exchange for her silence about an affair she claims she had with Trump in 2006. 
  
 The search warrants were obtained by federal prosecutors in Manhattan after they received a referral "in part" from Mueller. 
  
 Trump responded to reports of the raid by railing against the special counsel's investigation. He called it a "witch hunt," claimed Mueller's team was biased and said multiple people suggested he move to have the Justice Department fire the special counsel. 
  
 Mueller's probe thus far has led to indictments or guilty pleas from three former Trump associates and charges against 13 Russians for allegedly attempting to interfere in the election. ||||| Robert Mueller. Alex Wong/Getty Images 
  
 The special counsel Robert Mueller is looking into a large donation a Ukrainian oligarch made to the Trump Foundation in September 2015 after Donald Trump gave a video talk at a conference in Kiev, Ukraine, The New York Times reported Monday. 
  
 At the time, Trump was one of several Republicans vying to be the party's 2016 presidential nominee. 
  
 In August 2015, Doug Schoen, a political consultant who works for the Ukrainian billionaire and steel magnate Victor Pinchuk, contacted Trump to set up the speech, according to the report. 
  
 Trump accepted the request but did not broach the subject of any payment, the report said. But Trump's longtime personal lawyer, Michael Cohen, is said to have called Schoen the next day to ask for a $150,000 fee from Pinchuk in exchange for the talk. 
  
 The report comes as Mueller investigates the flow of foreign money into Trump's campaign and his business, as well as whether administration officials have used their influence within the White House to benefit themselves financially. 
  
 On Monday, investigators working for the US attorney's office in the Southern District of New York raided Cohen's offices in New York and seized records on various topics, such as the $130,000 Cohen paid the adult-film actress Stormy Daniels shortly before the 2016 election to keep her quiet about an alleged affair with Trump in 2006. Investigators are also said to have taken a computer, a phone, personal financial records, and attorney-client communications. 
  
 Cohen is a subject of scrutiny in two criminal investigations; one is overseen by the Southern District, and the other by Mueller's office. 
  
 The Washington Post reported Monday that investigators were looking into whether Cohen committed bank fraud and campaign finance violations. 
  
 Mueller recently subpoenaed the Trump Organization for documents and records related to its foreign deals. According to The Times, the Trump Organization handed over some, including about Pinchuk's donation. 
  
 As part of his investigation into the Trump Organization's foreign deals, Mueller is said to be particularly interested in the company's push to build a Trump Tower in Moscow in 2015, months after Trump gave the talk in Kiev. Cohen and Felix Sater, a Russian-born businessman, were instrumental in pushing for the deal. 
  
 Though the project ultimately fell through, it attracted scrutiny last month when Sater confirmed on national television that the Trump Organization was at the height of the campaign actively negotiating with a sanctioned Russian bank to secure financing for the building. 
  
 Mueller has questioned at least three wealthy Russian oligarchs about whether they directly or indirectly funneled money into the Trump campaign. Investigators have also been asking witnesses about money flowing in from the United Arab Emirates and have asked for information about Pinchuk as part of that inquiry. 
  
 Pinchuk's donation was the largest the Trump Foundation received in 2015 from anyone other than Trump, the Times report said. Experts who spoke to the newspaper said the amount seemed disproportionate to the length of Trump's talk, which lasted 20 minutes. 
  
 Trump gave the talk via a video link at the Yalta European Strategy conference, which promotes closer ties between Ukraine and the West. Previous attendees include Tony Blair, the former British prime minister, and former US President Bill Clinton. |||||
Output:
The New York Times is out with a story that will give President Trump one more reason to fume about Robert Mueller. The special counsel is investigating a $150,000 payment made to the president's foundation in September 2015 by a Ukrainian tycoon. Billionaire Victor Pinchuk made the payment to the Donald J. Trump Foundation after Trump gave a 20-minute speech by video to a conference in Kiev. The payment is "curious because it comes during a campaign and is from a foreigner and looks like an effort to buy influence," the former head of an IRS division that oversees tax-exempt organizations tells the newspaper. Plus, he adds, that's a lot of money for a 20-minute speech. The speech was set up by political consultant Doug Schoen, who works with Pinchuk and is a regular guest on Fox News, but it was Trump attorney Michael Cohen who solicited the payment after the speech was arranged. Business Insider describes Pinchuk as a "pro-Russian oligarch," and news of Mueller's interest in the payment comes after the special counsel questioned three Russian oligarchs on whether they illegally funneled money into Trump's campaign or to his inauguration, per the Hill. Pinchuk's own foundation says there is nothing suspicious about the payment, in part because back in September 2015, it was not at all clear that Trump would end up being the GOP nominee.