Trustee - Not a US Citizen

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US company sponsors a plan in New England.

The new president of the company is a Swiss Citizen here on a 2 year visa.

After reading Treas Reg 301.7701-7 - I get the impression he can not be the sole Trustee of the Plan. Furthermore even if there were two other Trustees ( total of 3) he still could not be Trustee since the us Trustees would not control all of the substantial decisions by the Trustees.

Is this correct?

Does this rule prevent him from being an authorized signer on the plan?

Or as long as there is one other Trustee ( US Citizen) he can be named Trustee and authorized signer.

thanks

so confused!!