§ 301(b) Any person who is a national and citizen of the United States at birth under paragraph (7) of subsection (a), shall lose his nationality and citizenship unless he shall come to the United States prior to attaining the age of twenty-three years and shall immediately following any such coming be continuously physically present in the United States for at least five years: Provided, That such physical presence follows the attainment of the age of fourteen years and precedes the age of twenty-eight years.
Automatic citizenship? Hardly. Actions are required.
A person who truly does have automatic citizenship, such as those born in the US with parental US citizenship, need not take any action to retain citizenship.
Naturalized persons’ citizenship is conditional.
First, 301(b) has been repealed. The only way now to have citizenship involuntarily removed is for treason.
Second, you can renounce your citizenship for a variety of reasons.
Third, the old 301(b) was simply assuming that the person had de facto renounced his citizenship, something that every citizen CAN do.
As stated, that provision has been repealed.
Your argument that citizenship cannot be birthright citizenship if it can be stripped is not valid, since it can be stripped in the case of treason and it can be renounced.
Your argument is that real birthright citizenship can never be negated. It can by your own action and it can for treason.
Therefore, your argument is invalid.