The government of the Serbian republic has taken a similar stand against the proposals.
There are signs that some high-ranking officials in the Serbian republic may favor signing the document, at least to buy time.
Yugoslavia is a federation of six republics and two provinces that are dominated by the Serbian republic.
In the Serbian republic, the government and the officially controlled news outlets have unanimously condemned the proposed changes.
I got out alive, and now the only thing I want is to leave the Serbian republic.
Under the present system, Yugoslavia has a strong central Government dominated by the Serbian republic.
Thus the presidency would have nine members, two-thirds of them from the federation and one-third from the Serbian republic.
Specifically, he said, negotiators were unable to work out the relationship between the Bosnian state and the Serbian republic to be contained within it.
They said Bijeljina was part of a Serbian republic.
Montenegro, which shares a religion and a language with Serbia, supported the Serbian republic in the wars of 1991 to 1995.