'Catastrophic impact': Trump aide worries about 'serious error' that could tank new term

A former Trump official who is still loyal to the President-elect blew the whistle on Sunday about something he warns will undermine the agenda for the new Republican administration.

Joshua Steinman, who spent four years on Trump's National Security Council in the first term, said over the weekend that he "fears there are mistakes being made NOW" regarding the National Security Council that "will lead to four years of ineffective governance at best, betrayal at worst."

"Out of loyalty to him...