House lawmakers on Wednesday will hear from Defense Secretary Mark Esper and Chairman of the Joint Chiefs of Staff Gen. Mark Milley, who will attempt to justify their fiscal year 2021 budget request amid political opposition to the Pentagon’s bankrolling of President Trump's border wall. Last week, the military services submitted $18 billion in "unfunded priorities" lists to Congress separate from the Pentagon's $705 billion fiscal year 2021 budget request. The lists complicate what was already expected to be a...