Since every single “war” the USA has been in since 1942 has been “undeclared hostilities”, I should think so. FDR was the last president who actually respected that Congress is supposed to be the branch to do that. We are currently conducting 7 known “undeclared wars”. Afghanistan, Iraq, Syria, Yemen, Somalia, Libya, and Niger. Presidential war powers need to be SEVERELY CURTAILED. I object to all these endless wars!