DHS Secretary Mullin reveals TOP THREAT to US homeland

By Fox News

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Homeland Security Secretary Markwayne Mullin joins 'The Sunday Briefing' to discuss border security, drug cartel drone activity and cyber threats. He also details President Donald Trump's border enforcement policies. #fox #foxnews #media #breakingnews #us #usa #new #news #breaking #thesundaybriefing #markwaynemullin #mullin #donaldtrump #trump #homelandsecurity #bordersecurity #immigration #drugcartels #drones #cybersecurity #cyberthreats #lawenforcement #nationalsecurity #border #technology #politics #political #politicalnews #government Don’t just watch Fox News—be part of it. Become a Fox News Patriot today. https://youtube.com/foxnews/join Subscribe to Fox News! https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.com/ Download the Fox News app: https://foxnews.onelink.me/xLDS/cd5yhg3o FOX News Channel (FNC) is a 24-hour all-encompassing news service delivering breaking news as well as political and busine

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