MP Sami Gemayel told a Parliament session on Tuesday that his Kataeb bloc was preparing a motion to challenge the newly-endorsed taxes law.
"We urge those who refuse the taxes to sign with us," he said.
"I also call for the formation of an investigation committee over the powerships file," he added.
Moreover, Gemayel maintained that the Lebanese army was capable of protecting all the Lebanese.
Condemning the visit of some ministers to Syria, the lawmaker demanded an official position from the government in that respect.
"Did the ministers impersonate an official capacity during their Syria visit?" he wondered.