The White House has blocked a key witness from testifying as part of the Democrats' impeachment inquiry into President Trump. Politico White House correspondent and associate editor Anita Kumar, Wall Street Journal congressional reporter Siobhan Hughes and CBSN legal contributor and former assistant District Attorney Rebecca Roiphe joins CBSN's "Red & Blue" with the latest.

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Xinhua 21 Oct 2019 12:32 CEST

China's rail transport in numbers