"I love Liz Cheney and what she's doing," Sembler told the magazine, adding that he would be "as supportive as my budget will allow."
Sembler is a former RNC finance chair, who later served as President Bush's ambassador to Italy and chaired Scooter Libby's defense fund.
Sembler is also said to be encouraging Liz Cheney to run for Congress from Wyoming, but told Newsweek she's not yet convinced "the time is right." Still, given the coming launch of KAS, it's not hard to imagine that calculus could change soon.
Liz Cheney's group has said it will run radio and Web ads attacking President Obama on national security, in the districts of vulnerable Democratic members of Congress.