US president travel with a team of diplomat and on Air Force 1, US president protect by his team of body guard. I don't think the law enforcement personal from other nation can get close to the US president and give a pat down.
that's the whole point ...US has always had double standards .
It has separate set of rules for itself and separate rules for others....
and do you know when this happens...by sheer arrogance ...
US authorities consider themselves superior ...
This supremacist thinking is responsible for Double standards being applied almost all the time whenever US deals with other countries ....
Us is Superpower today ...so she can enforce her whims and fancy on weaker countries ...
But India will not tolerate such double standards ...
Remember things don't remain same always ....
Things always change ...
The same British who once treated Indians as lesser mortals having ruled india for several hundred years are forced to reconcile to seat with India on equal basis today...
It will be better if this sense of ephemeral nature of wealth and materialism in infused in US as well...because what you consider today as yours may no longer be with you tomorrow ...
Learn to treat others the same way as you expect others to treat yourself...
US lacks this due to immense arrogance ....