“Investing in one thing often requires defunding another.” Former U.S. Deputy Secretary of Agriculture Kathleen Merrigan, who served during President Barack Obama’s first term, wrote those words in a May piece published by the website The Conversation. Undoubtedly, she is correct. But where that money comes from depends on which seat you sit in, the producer or the politician. This is exactly the problem German farmers are raising in a nationwide protest that started Monday and are expected to continue all week, according to Reuters. Their subsidies are being strangled. So are they. “In some a…