This proposal was not carried out at this time, but NAA in Arlington, Virginia would eventually be one of two stations to broadcast the second presidental speech carried by radio, by President Harding on May 30, 1922.

The Electrical Experimenter, September, 1916, page 319:

Why  Not  Have  the  President  Talk  Simultaneously  to  "All  the  People?"
SSH . . . . . . . . . . . . . . h ! ! ! "All ye, The People of the United States: his Excellency, the PRESIDENT!" This greeting may be heard all over the country, in the not-far-distant future, and not on a phonograph either, if Mr. Paul Calhoun's dream comes true. His idea is to link up all the larger cities and towns by radio with the powerful transcontinental government wireless station at Arlington, near Washington, so that when the President makes a speech before Congress or even his inaugural address, all the people can hear it, instead of a select few gathered within ordinary hearing distance of the speaker as has been the case in the past.
       Such a scheme as this does not belong wholly to the realm of idle dreams and the practical applications and tests already made with long distance radio-telephony from the powerful Arlington station controlled by the government, have proven that a man's voice can be flung afar, through the all-pervading ether from Washington to Honolulu, 4,900 miles. So, if such an idea as the one outlined here, is to be put into effect it would seem a not very difficult matter to ensure its emphatic success.
    In the radio telephonic tests conducted a few months ago, the wirelessly transmitted voice waves were caught on an antenna in the usual way and then transformed into pulsating electric currents, which passed over the regular wire circuit several miles long. Thus it has been found practical to transfer the spoken voice from a standard telephone circuit through a wireless station, across great distances by etheric waves, and back again into undulating electric currents passing over a metallic wire circuit.
    As the illustration shows, it would be possible to have the President make his speech in the usual way in the Capitol at Washington, and have the voice waves picked up by a battery of sensitive microphones, located at the speaker's desk. These would proceed to transform the voice vibrations into undulating electric currents, passing over a wire circuit to the radio station at Arlington. Here, by means of a sensitive vacuum tube control as used in the last memorable radio-telephonic test, the voice waves in the form of fluctuating electric currents of ordinary amplitude, would be amplified in power and propagated from the great antenna of the Arlington station with the power of several hundred horses. These oscillations would fly through space at a velocity of 186,000 miles per second, and thus would take but the fraction of a second to traverse the intervening space between Washington and San Francisco, or Honolulu, for that matter.
    As our artist has endeavored to show, the President's speech as received by radio in all the large cities throughout the country would be amplified if necessary through the apparatus, provided with large horns, so that an entire theater audience could hear the words distinctly. The receiving apparatus could be placed outside of public buildings, too, when desired. Not only would it be possible for those in such privileged locations to hear the President's words, but all amateur radio stations, of which there are many thousands throughout the country, could receive the message as well. Undoubtedly this plan will be tried out in the near future. It would seem a very patriotic and inspiring idea to carry this out during the next presidential inauguration exercises at Washington, in March, 1917.
national broadcast