WASHINGTON _ In his State of the Union speech Tuesday night, President Trump touched on the nation’s need for infrastructure improvements Tuesday night, calling on Congress to generate $1.5 trillion in investment in roads, bridges, railways and water lines.Addressing a deeply divided nation, Trump also called for a "new American moment" of unity and challenged lawmakers to make good on long-standing promises to fix a dangerously fractured immigration system, warning of evil outside forces seeking to undermine the nation's way of life.