When it comes to mortgage REITs, the management team makes all the difference. In the past, Motley Fool analyst Matt Koppenheffer says he's been skeptical of American Capital Agency (AGNC -0.67%) and its strategy. In this segment from The Motley Fool's everything-financials show, Where the Money Is, he and Fool financial analyst David Hanson take a question from the mailbag about what it would take for them to get interested in picking up shares of American Capital Agency.