Trump rallying with Hinson in Iowa as she pledges to push back on White House

What happened: President Trump is set to rally Thursday with Rep. Ashley Hinson in Sioux City, Iowa, as she runs for the state's open Senate seat against Democratic state Rep. Josh Turek. Why it matters: Hinson has adjusted her pledge to be Trump's "top ally," saying she will push back when needed, as the Iowa Senate race has grown more competitive than expected and puts Republicans' Senate majority on the line.

President Trump is set to rally Thursday with Rep. Ashley Hinson in Sioux City, Iowa, as she runs for the state's open Senate seat against Democratic state Rep. Josh Turek.

Hinson has adjusted her pledge to be Trump's "top ally," saying she will push back when needed, as the Iowa Senate race has grown more competitive than expected and puts Republicans' Senate majority on the line.