[metmom]

There is nonsuch thing as the Immaculate Conception.

Mary had human parents from whom she inherited a sin nature, just like everyone else on the planet who has a human father.

Mary didn’t need to be sinless either, because what you all claim God did for Mary in making her be born sinless from sinful human parents, God could have also done for Jesus being born of a sinful human mother.

[MurphsLaw]

There is nonsuch thing as the Immaculate Conception.

God could have also done for Jesus being born of a sinful human mother.

Now if you are willing to speculate God "could have also done"
something for Jesus- to keep him pure from a sinful birth

Why are you not able- or willing - to speculate "that God could also have done something" as well with regard to the Sinless Conception of Mary,
and in a sinless manner for her as well- to be the impure vessel for Jesus?