In process of being built for months now . No time wasted - as wall anyways cannot be created with a snap of fingers overnight , but takes time ...  Some wall sections on critical points have already been made .    EDIT : This article is older ( almost 1 year old - so some of sections could have already been completed ) , but is a good pointout to what was built , and what is being built ...  https://www.nationalreview.com/2018/06/us-mexico-border-wall-being-built-slowly/#slide-1