Additional capital does not automatically change voting or management rights. An investor can contribute substantial funds and still lack the authority needed to develop and direct the enterprise.
Budget the actual proposed structure
Review whether the contribution purchases shares, creates debt or has another documented treatment, and identify any accompanying governance change. Separate transaction-document review from government filing charges and other preparation expenses. The commercial price of a minority stake is not a universal E-2 threshold.
Do not spend on a larger contribution merely assuming that its dollar size resolves an unanswered control issue. Establish what the money actually bought by reference to the instrument recording it. A payment can purchase newly issued shares, acquire an existing holder interest, create a loan or fund the company without changing the ownership register at all, and only the subscription agreement, transfer instrument or loan document will say which.
Obtain that document before treating the amount as invested capital, and check whether any governance change accompanied it, since additional funds frequently arrive without altering voting or management rights. Where control is limited, more capital does not cure it. Budget the review of transaction documents separately from immigration preparation and from current government charges, and ask for the governance analysis in writing so it can be reassessed if terms move during a later funding round.