PBS NewsHour: Trump & Foreign Investigations, Flint’s Water, Borders, Etc. (10/03/19)

President Donald Trump reiterates his desire for foreign involvement in investigating the Biden family, saying he might ask China about the idea. Plus: The implications of Trump’s recent actions, problematic water in Flint five years after the lead crisis, what’s at stake in the General Motors strike, a book on U.S. border policy and China’s booming art market.