Donald Trump raised a new legal argument on Thursday, and one legal expert has labelled the attempt “galling.” The former president is currently trying to delay the Supreme Court’s consideration of his presidential immunity argument, which has him claiming that, as president at the time of Jan. 6, he should be exempt from any charges in connection with election subversion. Earlier on Thursday, Trump filed a reply brief before the nation’s highest court, which triggered a clock under which the Supreme Court could rule on the issue at “any time.” ALSO READ: Prison president: How Donald Trump cou…