President Obama hosted Canadian Prime Minister Stephen Harper and Mexican President Felipe Calderone April 2 for the North American Leaders’ Summit. The meeting focused on economic growth and competitiveness as well as energy, climate change, and security issues. Prime Minister Harper has expressed frustration with the Obama administration for rejecting the Keystone XL pipeline, and President Calderone is similarly vexed by United States’ failure to enact climate change legislation, especially as Mexico is soon to pass cap and trade legislation.