New Delhi: With Sena UBT becoming the fourth opposition party to announce a boycott of the JPC on the controversial bills about dismissal of jailed ministers and CMs, Congress is mulling the way forward on the parliamentary panel. While Sena UBT announced its decision to stay away from the JPC Monday, TMC, SP and AAP have already said they would boycott.Congress, with some other parties, are inclined towards participating in the joint parliamentary committee. After the bills were introduced in Parliament last week, divisions emerged in the coalition with TMC pushing for a boycott of the JPC while some other parties were for being part of the panel. This has brought Congress under pressure, even though certain other parties seem to favour the Congress stand. Congress sources said the party was weighing various issues involved. However, the issue of opposition unity also seems to be nudging the party.