MEXICO CITY, April 12 (Xinhua) -- The Mexican government must seek accords with the U.S. on border security, drugs and arms trafficking and migration during U.S. President Barack Obama's visit on April 16-17, Mexican senators said Sunday.

    This will be Obama's first visit to Mexico since he took office.

    The issue of arms trafficking should top the agenda, said Silvano Aureoles, deputy coordinator of the Revolutionary Democratic Party, Mexico's second largest political group.

    While the United States have focused on the issue of drugs being smuggled from Mexico into its territory, Mexican politicians have been pointing to an equally active trade in guns.

    On Sunday, Mexico's ambassador to the United States said that 90 percent of the weapons used by drug cartels in Mexico are smuggled from the United States. Firearms trade is illegal in Mexico but legal in the United States.

    Last month, the U.S. Senate voted for a 550-million-U.S. dollar program designed to stem the flow of guns and drug profits to Mexico from U.S. sources. It has not yet passed the lower House of Representatives.

    Aureoles also urged migration reform and organized crime to be included in discussions.

    Heladio Ramirez of the Institutional Revolution Party, Mexico’s third largest party, said that Mexico should negotiate a revision of the agricultural provisions of the North America Free Trade Agreement (NAFTA).

    This section "has hit Mexican peasants hard, triggering more illegal migration to the United States," Ramirez said.

    During his election campaign, Obama said he was interested in reviewing NAFTA, signed in the early 1990s by then-presidents Carlos Salinas, of Mexico, and Bill Clinton, of the United States.

    Mexico has complained about the United States' selective application of some NAFTA measures, and even took the extremely unusual step last month to impose trade tariffs totaling 2.4 billion dollars on a list of U.S. imports, after the U.S. Congress decided to end an experimental program that allowed Mexican trucks to pick up and deliver loads up to 100km into the United States.

    Cross-border trucking should have begun as soon as NAFTA came into force in 1994, but had only begun in a limited and heavily supervised way in 2007.

    Gustavo Madero, Senate leader for the ruling National Action Party, said the visit will open the door to possible agreements on public security, money laundering, arms trading and migration.