Harris flip-flops on building the border wall

If she's elected president, Kamala Harris pledges to spend hundreds of millions of dollars on the wall along the southern border — a project she once opposed and called "un-American" during the Trump administration.

Why it matters: It's the latest example of Harris flip-flopping on her past liberal positions such as supporting Medicare for All and banning fracking — proposals that aides say she now is against.

Harris is embracing a more hawkish immigration policy as Donald Trump's campaign spends tens of millions of dollars attacking her about the border.

But she still has significant differences with Trump on immigration, opposing his approach to family separation and his plans for mass deportations.