He says his political enemies have been conducting a 'stealth' [='secret'] campaign to block his nomination.
The fox uses 'stealth' and cunning to hunt its prey.
a 'stealth' bomber/fighter
(..) in what they planned to become a Eurasian Union under their control. Although the establishment claimed to be fighting for our freedom abroad, they were destroying our sovereignty by stealth. Expanding on NAFTA... they were able to consolidate power on the domestic front... by deindustrializating (..)2009 Loose Change 9/11: An American Coup
(..) We have just exposed many of the globalist operations, including drug dealing, funding terror, dealing arms... and taking over the United States Government by stealth. Whenever these agendas were threatened, those who opposed them ended up dead. We've got some difficult days ahead. (..)2009 Loose Change 9/11: An American Coup