Apparently not.
>In Brown v. Hartlage (1982), a Supreme Court case where a Kentucky county commissioner promised to reduce his salary if elected, the Court unanimously drew a line between policy promises and vote buying. “A candidate’s promise to confer some ultimate benefit on the voter, qua taxpayer, citizen, or member of the general public, does not lie beyond the pale of First Amendment protection,” Justice William Brennan Jr. wrote. Given that precedent, Trump is almost certainly within the bounds of the law (you might remember Elon Musk wasn’t charged for handing out $1 million checks to people during a campaign rally in Wisconsin in exchange for “taking the time to vote.”).