Who defends Trump's 'zero-tolerance' policy?

Choices:
A. not enough information
B. Kristjen Nielson
C. Press Secretary Sarah Sanders
D. Tim Kaine
Kristjen Nielson
WHITE HOUSE — "The United States will not be a migrant camp and it will not be a refugee holding facility," President Donald Trump vowed Monday amid growing outrage over his administration forcibly separating children from parents at the U.S. border with Mexico.
Trump, speaking in the White House East Room during a National Space Council meeting, warned that "what's happening in Europe … we can't allow that to happen to the United States — not on my watch."
Earlier in the day, on the Twitter social media platform, the president inaccurately linked migration in Germany to a rising crime rate. In actuality, the latest German government statistics show reported crimes at the lowest level in 30 years.
Tough border enforcement in the U.S. has led to the family breakups, with nearly 2,000 children being sent to mass detention centers or foster care from mid-April to the end of May, according to government officials.
The regular White House briefing was delayed several times Monday amid the furor as officials huddled with Trump in the West Wing.
Press Secretary Sarah Sanders finally introduced Department of Homeland Security Secretary Kirstjen Nielsen after 5 p.m., and she defended the administration's "zero-tolerance" policy that is breaking up families at the southwestern U.S. border.
Nielsen forcefully pushed back at the negative media coverage, asserting that what U.S. authorities are doing is properly enforcing the law.
"What has changed is that we no longer exempt entire classes of people who break the law," she said.
Asked about critics accusing the administration of using children as "pawns" to demand legislative actions from Congress, the DHS secretary replied, "I say that is a very cowardly response," adding it is clearly within Congress' power "to make the laws and change the laws. They should do so."
Trump's Republican party controls both chambers in Congress, and the family border policies were set by his administration.
In a tweet displaying photographs of a detention facility, showing children sleeping on mats with foil blankets, Democrat Senator Tim Kaine wrote: "The real Trump Hotel."