No. If you are a a native-born or naturalized American citizen your citizenship cannot be removed from you - UNLESS - you used fraud in order to gain your American citizenship. In THAT case you could be deported to your country of origin.
You would have to commit a terrible crime.
Yes, it is possible to lose your US citizenship if you voluntarily renounce it, commit certain acts of treason or fraud, or obtain citizenship in another country with the intention of relinquishing your US citizenship.
No you cannot lose it generally, you can only lose it if 1) you have commited some kind of major crime 2) you have lied when applying for citizenship 3) you got another countries nationality/citizenship before 2002
A citizen can lose their citizenship through actions such as renouncing it voluntarily, committing treason, or fraudulently obtaining citizenship.
Never.
I'm pretty sure that if you abuse a child or commit some kind of crime then you can loose custody of the child/children.
Not unless you renounce your Canadian citizenship voluntarily.
you can have two citizenships
A person can lose their US citizenship by voluntarily renouncing it, committing treason, or serving in a foreign military.
Most people commit crime when the want something that they think they cannot acquire legally or if it is a crime of violence because they lose their temper. It can be somethoing committed in anger or it can be something illegal that the person did not realize it was illega. There are numerous other reasons but too numerous to list.
Although another country may grant citizenship in their country to a U.S. citizen the U.S. does not recognize or grant dual citizenship. A U.S. citizen "forswears allegiance" to any other power. See: http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=96719c7755cb9010VgnVCM10000045f3d6a1RCRD&vgnextchannel=96719c7755cb9010VgnVCM10000045f3d6a1RCRD See also: http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=931696981298d010VgnVCM10000048f3d6a1RCRD
Yes, a person can lose their US citizenship through voluntary renunciation, committing treason, or serving in a foreign military.