Watch: White House briefs media amid concerns about Trump's proposed tariffs

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Department of Homeland Security Secretary Kirstjen Nielsen and White House press secretary Sarah Huckabee Sanders briefed reporters Wednesday.

Nielsen said President Donald Trump will work with state officials to send National Guard troops to the southern border. The briefing comes amid concerns about President Donald Trump's proposed tariffs on China.

Sanders will likely face a slew of questions about trade policy, as well as the Trump administration's plans about whether to keep troops in Syria.

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