text: how does charter change affect our nation?   in this, i assume "our nation" is the philippines?  the thing to remember is that such a drastic change in the way you are governed will have long-term effects.  the strongest anti-chacha argument i've seen is that local members of the house are often chosen because they have the backing of local oligarchs and prominent families.  with a unicameral legislature, and no nationally-elected president, a coalition of faction can rule the nation until the next election.