Cassidy primary shows how Trump pits Republicans against each other as they face midterm reckoning

WASHINGTON (AP) — President Donald Trump is fighting a two-front war at the outset of this year’s midterm campaigns, working to prevent Democratic victories while also attempting to purge the Republican Party of the few remaining members who have defied him over the years.

Sen. Bill Cassidy became Trump’s latest target on Tuesday when Rep. Julia Letlow announced a primary challenge with the president’s endorsement. Cassidy had been unable to work his way back into Trump’s good graces after...