Interstate 91
... that after the September 11 attacks, a seldom-staffed temporary border patrol checkpoint was installed on Interstate 91 near White River Junction, Vermont, about 100 miles (160 km) from the Canadian border?
... that after the <a href="./September_11_attacks" id="mwBi0" rel="mw:WikiLink" title="September 11 attacks">September 11 attacks</a>, a seldom-staffed temporary border patrol checkpoint was installed on <b id="mwBi4"><a href="./Interstate_91" id="mwBi8" rel="mw:WikiLink" title="Interstate 91">Interstate 91</a></b> near <a href="./White_River_Junction,_Vermont" id="mwBjA" rel="mw:WikiLink" title="White River Junction, Vermont">White River Junction, Vermont</a>, about <span about="#mwt84" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"100"},"2":{"wt":"mi"}},"i":0}}]}' id="mwBjE" typeof="mw:Transclusion">100 miles (160</span><span about="#mwt84" typeof="mw:Entity"> </span><span about="#mwt84">km)</span> from the Canadian border?