The Memo: Midterms shape up as proxy war between Biden and Trump

The midterm elections are shaping up as a proxy war between President Biden and former President Trump.

Biden has gone after Trump in a fiery fashion in recent weeks, including in Thursday night’s prime-time speech in Philadelphia.

Referring to the movement that takes its inspiration from the former president, Biden said: “Donald Trump and the MAGA Republicans represent an extremism that threatens the very foundations of our republic.”

The Thursday speech made crystal clear that the days of Biden seeking to focus only on his own agenda, or making oblique...