Prime Minister Shigeru Ishiba on Saturday criticized opposition leaders as irresponsible for proposing a consumption tax cut without a plan to offset lost revenue, as Japan's House of Councillors election campaign entered its first weekend.Official campaigning for the July 20 upper house race began Thursday, with parties vying over tax cuts as a form of inflation relief. The focus is on whether the ruling coalition led by Ishiba's Liberal Democratic Party can maintain its majority in the chamber."All of the consumption tax is used for health care, nursing and other services. Can we really a…READ FULL ARTICLE