What did congress authorize in 1996, which was later declared unconstitutional, in order to let the president reject specific parts of a bill?

Match the description to the term. 1. ancient people of the british isles normans 2. possible location of oldest known writing emigrate 3. a variety of a language celts 4. the study of word forms indus valley 5. to leave one's country morphology 6. invaded england in a.d. 1066 dialect