Here is the news! It turned out that the sponsor of the relocation of Prince Harry in the United States itself became Meghan Markle. This publication reports Page Six, citing its own sources in the migration service. Why moving is done with the money Megan?
The fact that Harry himself is now busy with the paperwork: they must first obtain a visa, green card and place the rest of the documents to live and work in the United States. The same publication now reports that Harry entered the States most likely on a diplomatic visa, which gives the right to engage in any other paid activity, except for work at the Embassy or Consulate.
For a period while Harry is involved in all this, his surety of Meghan Markle who is already a U.S. citizen. Under the laws of the States in cases which it will take care of all his financial obligations.