(CNN) -- President Barack Obama will find that much has changed in Mexico when he arrives on May 2. Our neighbor to the South -- and second-largest export market -- has moved far ahead with reforms. As Congress crafts comprehensive immigration legislation, Democrats and Republicans must keep in mind that Mexico is changing rapidly, and policies crafted to reflect yesterday's Mexico will not help the U.S. make the most of the potential of today's and tomorrow's Mexico. Mexico's future is bright, and tapping into this growth and economic prosperity is vital to U.S. competitiveness. But the U.S. needs immigration reform to build on its huge bilateral trade with Mexico -- more than $1 billion in goods and services each day, or $45 million an hour.
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Jason Marczak: Obama will see a Mexico on the rise economically when he visits
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Marczak: Immigration law needs to address the Mexico of today and tomorrow
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Immigration reform will open up one of Latin America's fastest-growing economies, he says
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Also critical for increasing cross-border trade is improving efficiency at the border, he says
Undocumented immigration will keep declining as more @placeholder find new opportunities at home.