If you can get one to basically go out partying this should be a piece of cake.
Not really. It all depends on what exactly is prohibited. I'll take the liberty of writing my feelings on the topic and hope it'll go down well.
When a human being tells us "don't light a fire" he's human and doesn't necessarily express what he means. To be upright people we should assume, a. He doesn't want there to be a fire, not lit by you or by anyone else, b. He may want you to sit in the dark, etc.
When G-D tells us "don't light a fire" that's exactly what he means.
Now here it gets complicated. There are 2 things the Talmudic sages did. A, based on their divine intuition (רוח הקודש) they were able to interpret G-Ds commandments and explain what is intended. B, they created many rules so that we stay far away from transgressing any prohibition.
The second category, they have every right to say it doesn't apply in certain cases. Although some may call it a loophole, that's not really what it is.
For example, when Jared Kushner were to get a ride on Shabbos, he's not lighting a fire, he's not even having a fire lit for his cause. Joe Smith gets an annual pay check to drive for the secret service. The secret service has a year round responsibility to protect the first family. When the secret service decided that to protect the life of the first family while walking in the street is impossible and ask Joe Smith to drive a car (light a fire) he's doing it for his own good, not for anyone elses.
While you may say that they should've stayed home instead, if you think about how not necessarily is any prohibition being violated, in a situation when dealing with leaders of countries I can understand why many a Rabbi would permit it.
Editor's note: I'm no practising Rabbi and have no idea on what basis the heter was given, nor do I care, these are just some thoughts that crossed my mind.