washington unite state invest missile defense give missile test north korea iran chairman house representatives arm service committee say monday comment republican representative mac thornberry follow new u.s. sanction iran tehran recent ballistic missile test washington also concern north korea may prepare test new ballistic missile thornberry position sign support congress military spend counter north korea president donald trump 2016 election campaign raise doubt future u.s. fund defend ally like south korea japan look happen around world would mention iran north korea importance missile defense increase thornberry say roundtable discussion reporters say need provide systems improve missile defense technology actors around world build missiles hard stop add jim mattis trump defense secretary tell south korea last week washington seoul would stand shoulder-to-shoulder face threat north korea south korea unite state recommit plan deploy 800 million advance missile defense system south korea late year broadly thornberry also say expect end strict limit defense spend republicans control congress white house 2011 budget control act impose across-the-board cut government spend former president barack obama democrat congressional democrats able ward republican push increase defense budget without also raise spend non-defense items education medical research think tremendous opportunity right thing thornberry say federal budget look play case many years trump administration expect within weeks send congress request supplemental bill increase defense spend year u.s. expand missile defense due north korea iran lawmaker