[Name Withheld] wrote:
If I marry someone who once ate bread on Pesach, do my children get "karet" (lit. "cut off")?
Dear [Name Withheld],
The Torah says that eating bread on Passover is a serious sin and carries the punishment of karet. Your question assumes that this punishment of karet affects a person's children. Without going into whether this is true or not, it's important to point out that karet only applies to someone who intentionally transgresses with full knowledge that the act is forbidden by the Torah. Furthermore, sincere repentance can atone for such acts.
So, if the person you intend to marry was not fully aware of the sin of eating bread on Passover, or has since repented, you need not worry.