He has 2.8 million men under arms. Calling up 150.000 may well be almost insignificant and. while Congress has supported his request. the lack of an adequate explanation is creating a wrong impression abroad. The President has also made such statements as "we must continue to keep the American people fully informed" and "we must continue to work with Cuban refugee leaders." But we have yet to see a practical application of those principles or the Presidents pledge to "do everything within our power to prevent such a threat from coming into existence." The fact is. Mr. Chairman. we have no plan geared to accomplish this.