Const guarantees that none will be discriminated in the Republic. I can't see how this law can "officialy define what the constitution says about freedom from descrimination and prejudice".

None will be discriminated regardless his sexual orientations stated the Const.

What at law says and how it is interpreted and carried out may be two different things. putting it in writing will ensure that there are no questions.

Sorry, but i'm against plural marriages.

Step one on the way to passing a law that does not allow personal choice and it basing it on prejudice and descrimination. Whether you are against it or not does not mean others do not have the right to live as such. Their right is protected and rightfully so. To prevent questions by spelling it out is a good idea especially on such a contriversial topic.

I'm not sure, if there's no maritial status, why such laws should be affected by maritial status? I can't understand..... Anyway, if we'll need them, we can approve them in the future.

In the US taxes are affected by marital status as well as Wills and divorces and lawsuits and other legal matters that the marital status may need to be taken into account.