No, they can't.
The border with Mexico is often crossed illegally.
The border that the Great Lakes are found across is that with Canada, our northern border.
No. Toronto is on the northern shore of Lake Ontario. The US-Canada border cuts across the lake.
NO!
Head for Bellingham, Washington State.
There were more and more terrorists sneaking across the border from Canada to the US. Both countries agreed to beef up security along the border.
drive it across the border. its the easiest way
The border is just there, nobody "paid" for it. Mexico sees no need to enforce the border but the US tries to prevent illegal crossings from Mexico, so if you are asking about who pays to enforce immigration laws across the border, then it is 100% the US.
State Department Travel Warnings should be consulted prior to taking trips across the US-Mexican border
State Department Travel Warnings should be consulted prior to taking trips across the US-Mexican border
State Department Travel Warnings should be consulted prior to taking trips across the US-Mexican border