President Obama and his counterparts from Canada and Mexico will meet at summit . They are bonds to take pride in , that unite the countries of North America in unexpected , beautiful ways . Carter Roberts , Omar Vidal : They should discuss plight of monarch butterflies . 2013 was the worst year for these butterflies in recorded history , they say . Roberts , Vidal : The U.S. is not doing enough to protect them.
President Obama and his counterparts from Canada and Mexico will meet at summit . Carter Roberts , Omar Vidal : They should discuss plight of monarch butterflies . 2013 was the worst year for these butterflies in recorded history , they say . Roberts , Vidal : The U.S. is not doing enough to protect them.