Under the law, concealed carry permit holders are allowed to transport their weapons on trains and buses, but only if they are secured in a locked container and unloaded.

The U.S. Supreme Court's Tuesday decision against Donald Trump's deployment of the National Guard in Illinois had the "unintended consequence" of potentially pushing the president to deploy active-duty military units instead, legal scholar John Yoo, who previously clerked for conservative Justice Clarence Thomas, said Wednesday.