Why did Trump ban 3 major news outlets from White House?

US President Donald Trump banned CNN, MS NOW and Politico from White House, accusing them of reporting fake news, adding, "I don't have to let them into...people's house." Trump said there was no specific incident that prompted the ban, stating, "It's really just cumulative stories over the past few years." He further said the outlets "shouldn't be able to constantly...report...lies".