buenos air argentina low house congress try monday debate government pension bill lawmakers say friday first attempt discuss week end violent protest force legislature suspend session bill key president mauricio macri effort low business cost reduce argentina fiscal deficit already pass senate leave low house give final legislative approval thursday debate suspend spark riot capital put police fire rubber bullets tear gas opposition protesters politicians unions say legislation hurt pensioners monday debate bill amend provide bonus country needy retire government say move may increase chance passage amendment make strong effort compensate need macri-allied house member mario negri tell reporters agreement include bonus come long meet friday among lawmakers provincial governors macri administration officials macri aim cut fiscal deficit 3.2 percent gross domestic product next year 4.2 percent year reduce inflation 12 percent 20 percent year pension bill would change formula use calculate benefit payments would adjust every quarter base inflation rather current system twice-yearly adjustments link wage rise tax revenue economists say current formula mean benefit go line past inflation leave unchanged could harm macri efforts cut fiscal deficit new formula benefit would increase percentage point inflation accord cabinet chief marcos pena plan would take effect time low inflation expectations hence slow pace pension benefit increase argentine congress make fresh attempt pension debate monday