María Corina Machado, Rep. Mike McCaul, Gary Cohn

<p>This week on 'Face the Nation,' an exclusive interview with Venezuelan opposition leader and Nobel Peace Prize winner María Corina Machado.</p>

<p>After a whirlwind of meetings in Washington, Machado is projecting optimism about her country's future…even as her own future remains murky, with the party she defeated in nationwide election still holding power with the support of President Trump. What comes next for her and for Venezuelans? </p>

<p>Meanwhile the debate over ICE immigration enforcement drives more protests across the country and sparks a fight in Congress over funding for the Department of Homeland Security. We talk to Republican Congressman Michael McCaul about immigration debate that sparked a partial government shutdown. </p>

<p>Plus - President Trump's top economic adviser in his first term, Gary Cohn joins us. We ask about the president's new pick to lead the Federal Reserve and the state of the economy as tax season gets underway. </p>

<p>Finally - a bipartisan conversation with four of America's mayors on how they're striking a balance between local priorities and federal authority.</p>