Probably the Islamic version of crossing your fingers when you don’t mean what your saying. I think they call it “taqiyya” when they pledge to uphold the Constitution and US laws.
Islam teaches that allah is the master deceiver so I always view what they say as possible deception and I think I am often right. DemocRATs also operate on deception so that is probably why the left has often sided with islam, from hitler to 0bama.