Sometimes I think our old friend Ben Gurion-Tosefta was right. Do you argue just for the sake of scoring points? If you change the electorate significantly, who is elected is likely to change. New people and new parties elected to the Knesset can change laws. They can change how and what is defined. Ariel Sharon understood that. It is a reason he didn't favor expanding the electorate to include a lot of Palestinians. If you expand the electorate to include 6 million American Jews, it is likely to change the outcome of elections. Not all of them have the same views as you do. And the last time the laws were set in stone, the tablets got lost. People make laws and people can change laws.
from the article: If Israel lets ex-pats vote, what's to stop enfranchising all Jews?