What purpose does the underlined portion of this excerpt serve in the argument that Americans should agree to pay

more taxes to raise money for entering the war?

The below mentioned portion is missing from the question

A part of the sacrifice means the payment of more money in taxes. In my Budget Message I shall recommend that a greater portion of this great defense program be paid for from taxation than we are paying today. No person should try, or be allowed, to get rich out of this program; and the principle of tax payments in accordance with ability to pay should be constantly before our eyes to guide our legislation.

The passage provides the reason why extra taxes must be collected should America decide to join the war  or it introduces the claim that patriotic Americans should be willing to sacrifice and pay extra taxes.

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