NEW YORK (AP) — As the White House struggles to move past another self-imposed crisis, Democrats are fighting to ensure this one isn’t quickly forgotten. Fiery Democratic leaders from Vermont to New Jersey to Texas met President Donald Trump’s executive order to stop dividing immigrant families with deep skepticism, promising waves of protests, border visits and congressional oversight to shine new light on the Republican administration’s immigration tactics.

Iowa voters learned that another 2020 prospect, former Housing and Urban Development Secretary Julian Castro, was canceling a weekend appearance in the leadoff presidential caucus state to attend a demonstration at a refugee tent city along the U.S-Mexico border.

In an interview, Castro said Trump’s new order is a valid remedy only if children are immediately and humanely reunited with their parents. Republicans have no hope of retaining the congressional majority this fall, Castro predicted, should they continue to adopt restrictive immigration measures. “The president may be signing an executive order backing down, which he never does, because he’s offended our sense of morality,” Castro said. “He’s crossed a line, whether he realizes he’s crossed it or not.”

Yet for all the outrage, the fallout from Trump’s policy to separate children from their parents at the border — and his subsequent reversal on Wednesday — highlighted a scattershot strategy from a Democratic Party still searching for new leadership and a consistent message as the Trump presidency stretches deeper into its second year.