Possibly false but I’m kinda not smart so my answer might be false
The amendment becomes part of the Constitution when it has been ratified by three-fourths (currently 38) of the states. This process has been used for ratification of every amendment to the Constitution thus far. Article V also provides for an alternative process, which has never been utilized.
Was a landmark decision in which the Supreme Court of the U.S. held that is info uncostitilutional to impose capital punishment for crimes committed while under the age of 18.