Rep. Eric Swalwell (D-Calif.) blasted President Trump Wednesday for the zero-tolerance enforcement policies toward asylum-seekers at the U.S.-Mexico border.

Trump has consistently blamed Democrats for migrant families becoming separated at the border, but has also said he supports the zero-tolerance policy.

"Either he's too weak to pick up the phone and exercise the power that the American people have given him, or he's too cruel," Swalwell said.

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Sen. Marco Rubio (R-Fla.) said Wednesday that it's up to Congress, and not Trump's administration, to create a policy that would hold migrant families at the border together.

He cited the Flores Agreement, which said that minors can only be detained for up to 20 days.

In response, Swalwell, appearing on "America's Newsroom," recited the phone number for U.S. Customs and Border Protection.

He added that President Trump could call the number and keep families together while still enforcing immigration law.

Fox News learned Wednesday that the White House is considering executive action that would allow migrant children to stay with their parents who were caught crossing the border illegally.

"If we are in the position where we're trying to say this is not like the Japanese internment camps or this is not 'kids in kennels,' we are losing," said Swalwell.

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