Already bargained down to just a long jail sentence?
While broadly speaking, Treason is a capital offense, just as killing someone is, broadly speaking, a capital offense, one would need to look at the specifics.
The object of those involved was to get Hillary elected, and those doing so thought that this was best for the U.S.
Someone who kills someone while driving drunk shouldn’t get the chair; someone committing this crime should be sent to a prison that has been subject to the prison equivalent of busing so that they may have prisonmates that reflect the cross-section of the American prison population. They should not receive the benefits of any white privilege.
Segregating prisoners into different prisons is racist unless all prisons have the same racial composition.
Whoever, owing allegiance to the United States, levies war against them or adheres to their enemies, giving them aid and comfort within the United States or elsewhere, is guilty of treason and shall suffer death, or shall be imprisoned not less than five years and fined under this title but not less than $10,000; and shall be incapable of holding any office under the United States.
(June 25, 1948, ch. 645, 62 Stat. 807; Pub. L. 103–322, title XXXIII, § 330016(2)(J), Sept. 13, 1994, 108 Stat. 2148.)
https://www.law.cornell.edu/uscode/text/18/2381
Sentence them to years and years in jail; capital punishment would create “martyrs”.
(June 25, 1948, ch. 645, 62 Stat. 807; Pub. L. 103–322, title XXXIII, § 330016(2)(J), Sept. 13, 1994, 108 Stat. 2148.)