Partly Facetious: Is parliament not supreme?

"The lemurs have come home to roost."
"What lemurs?"
"Our former Prime Minister had an uncanny resemblance to a lemur; he and his sons have been summoned by the Federal Investigation Agency."
"Ah, woe is me! What revenge is Rehman Malik taking from the Gilani family, all Gilani senior did was to support Malik all through his premiership and..."
"Malik says the Director who summoned the Gilanis to record a statement is not under his control."
"Ah, woe is me."
"Stop saying that, the Supreme Court directed the relevant officer to file a reference against the Gilanis and let's be honest RM can't stop that. And furthermore the detailed judgement on the Asghar Khan case absolves bureaucrats from implementing the illegal orders of their superiors so the combination of the two is proving deadly for the Gilanis."
"Right, but the fiery speech of Gilani junior..."
"The National Assembly led by Yasmin Rehman, as both speaker and deputy speaker were not present, summoned the relevant FIA official who dared summon the Gilanis."
"One question: is parliament not supreme?"
"Actually it isn't, the constitution is supreme and the constitution allows the Supreme Court to interpret the constitution."
"But victimisation of the former Prime Minister and his two sons..."
"They must clear all charges against themselves, and yes Abdul Qadir maintained that the allegation against him was levelled by a PML (N) chap who later withdrew it..."
"See this withdrawal of petitions, the disappearance of the accused and the death of witnesses has become routine where the case is against a high profile family and it makes me conclude that we are living in banana land."
"Well, we are but now we will be in banana land that would have no Gilani sitting in the assembly if the Director FIA is not dealt with appropriately and..."
"Empty threat, Gilanis know that there is no vacuum in politics so if they resign then other parties would jump in."
"But they can join another party."
"That would be ironical given Gilani senior's supreme sacrifice."
"So you reckon the lemurs aren't going to come home to roost?"
"Nope, and besides the correct expression is chickens..."
"Indeed, the lemurs have been turned into chickens."
"Don't be facetious."