I wonder why he would do this now?
I have never heard of a president heralding this day.
Proclamation on Law Day, U.S.A., 2020
NOW, THEREFORE, I, DONALD J. TRUMP, President of the United States of America, in accordance with
Public Law 87–20, as amended, do hereby proclaim May 1, 2020, as Law Day, U.S.A. I urge all Americans, including government officials, to observe this day by reflecting upon the importance of the rule of law in our Nation and displaying the flag of the United States in support of this national observance; and I especially urge the legal profession, the press, and the radio, television, and media industries to promote and to participate in the observance of this day.
IN WITNESS WHEREOF, I have hereunto set my hand this twenty-ninth day of April, in the year of our Lord two thousand twenty, and of the Independence of the United States of America the two hundred and forty-fourth.
DONALD J. TRUMP
https://www.whitehouse.gov/presidential-actions/proclamation-law-day-u-s-2020/