Pakistan government is likely to move constitutional amendments before National Assembly and Senate tomorrow (Saturday) as it claimed to have 2/3 majority. Sources familiar with the development said Senators and MNAs of the treasury benches have been asked to remain in Islamabad as it is planning to devise a strategy for constitutional amendments. The National Assembly and Senate sessions will continue even on Sunday, the sources said and added MQM-P has also summoned its two MNAs to Islamabad from Karachi with immediate effect.