>>15612911 (lb)
18 U.S. Code § 1030 - Fraud and related activity in connection with computers
Whoever—
knowingly accessed a computer without authorization or exceeding authorized access….accesses such a computer of that department or agency that is exclusively for the use of the Government of the United States or, in the case of a computer not exclusively for such use, is used by or for the Government of the United States and such conduct affects that use by or for the Government of the United States…
(A)a fine under this title or imprisonment for not more than ten years, or both, in the case of an offense under subsection (a)(1) of this section which does not occur after a conviction for another offense under this section, or an attempt to commit an offense punishable under this subparagraph; and
(B)a fine under this title or imprisonment for not more than twenty years, or both, in the case of an offense under subsection (a)(1) of this section which occurs after a conviction for another offense under this section, or an attempt to commit an offense punishable under this subparagraph
I skipped a lot of yada yada yada, but above is a general idea of just ONE of the statutes they violated in accessing the President's Internet traffic.
https://www.law.cornell.edu/uscode/text/18/1030