Beef packer margins rallied for the third straight week and returned to positive values for the first time in a month. Margins rose $16/head and hit an estimated $15 as fed cattle prices fell another $2/cwt while beef values rose by the same amount. The outlook for packer margins is increasingly clouded with the Trump administration’s threatened actions to control beef prices. Without government interference, seasonal beef demand strength would point to a firmer outlook for margins. With the Trump administration likely to interfere, however, packers could see beef prices dip and return profits to the red.  Feedlot profitability was mixed last week due to ...