Russian officials concerned about treatment of children adopted by Americans are considering suspending all adoptions by US citizens. The Foreign Ministry is weighing the suspension until a new accord with the US is signed allowing officials to better monitor the welfare of children taken to America, reports ABC News. Adoptions were temporarily halted in 2010 when a Tennessee mom put her 7-year-old son on a plane, alone, to Russia with a note pinned to his shirt saying she was returning him because he was "mentally unstable." Another couple was convicted of involuntary manslaughter last year in the death of their 7-year-old adoptive Russian son. They're already out of prison. US citizens have adopted close to 50,000 Russian children in the last 20 years.