The procedure under section 28 of the merchant marine act has created great difficulty and threatened friction during the past 12 months. Its attempted application developed not only great opposition from exporters, particularly as to burdens that may be imposed upon agricultural products, but also great anxiety in the different seaports as to the effect upon their relative rate structures. This trouble will certainly recur if action is attempted under this section. It is uncertain in some of its terms and of great difficulty in interpretation.