At the same time it is quite evident that the means which Congress has of controlling the departments and of exercising the searching oversight at which it aims are limited and defective. Its intercourse with the President is restricted to the executive messages, and its intercourse with the departments has no easier channels than private consultations between executive officials and the Committees, informal interviews of the ministers with individual members of Congress, and the written correspondence which the cabinet officers from time to time address to the presiding officers of the two Houses, at stated intervals, or in response to formal resolutions of inquiry. Congress stands almost helplessly outside of the departments. Even the special, irksome, ungracious investigations which it from time to time institutes in its spasmodic endeavors to dispel or confirm suspicions of malfeasance or of wanton corruption do not afford it more than a glimpse of the inside of a small province of federal administration. Hostile or designing officials can always hold it at arm's length by dexterous evasions and concealments. It can violently disturb, but it cannot often fathom, the waters of the sea in which the bigger fish of the civil service swim and feed. Its dragnet stirs without cleansing the bottom. Unless it have at the head of the departments capable, fearless men, altogether in its confidence and entirely in sympathy with its designs, it is clearly helpless to do more than affright those officials whose consciences are their accusers.