timothy wu, thomas rid.tlemen, thank you. >> thank you. >> woodruff: and in other news, president trump took to twitter today to downplay the role of a former campaign aide who plead guilty in the russian probe. george papadopoulos admitted to lying to the f.b.i. about his contacts with russia. today, mr. trump tweeted, "few people knew the young, low level volunteer named george, who has already proven to be a liar." we will take a closer look at robert mueller's investigation into russian meddling in the 2016 election, after the news summary. mr. trump also met with business leaders at the white house to push his plans for tax reform. pushing speed, the president said he is "hopefully not" looking to phase in a corporate tax rate cut. he revealed his economic advisors will stay in washington during his upcoming asia trip to help fine-tune the tax overhaul. >> i want the house to pass a bill by thanksgiving. i want all of the people standing by my side when we get ready to sign by christmas. hopefully befor