Congressman Ro Khanna talks Trump's China trip, the Massie primary, and Democratic infighting — bad news for Trump's working-class promises and for any Republican who crosses him.

• Trump went after Khanna on Fox News after Khanna said the China trip is bringing Wall Street billionaires to offshore more US jobs, breaking Trump's promise to bring manufacturing back.
• The Iran war pushed up food, fertilizer, and gas prices, which keeps the Fed from cutting interest rates that Trump badly wants lowered.
• Thomas Massie's Kentucky primary next week is neck and neck — he leads with Republicans under 50, but loses with older Republicans, and Trump's team is running character attacks.
• If Massie loses, it tells every member of Congress that crossing Trump ends your career; if he wins, he becomes a national figure and possible Republican presidential contender.
• Khanna's own primary challenger is backed by Silicon Valley billionaires angry that Khanna wants a one-time 5% wealth tax to fund healthcare for two million Californians.

Outlook: The Massie race next week will set the tone for whether Republicans can defy Trump and survive.