July 22, 1986

''I have paid my taxes, I have represented many major companies in this country very successfully and very effectively.

International Mexico plans to sign a debt agreement today with the International Monetary Fund that could bring it $12 billion in new loans, according to Mexican officials and international lending authorities. But an international lending official described the aid as a short-term solution for Mexico, which faces a deep recession, heavy debt payments and plunging oil revenues. In addition, banks might be reluctant to meet their part of Mexico's loan request, which will be more than double the amount previously being considered. The accord calls for fewer austerity measures than similar pacts in the past, and it provides more loans if oil prices fall further. [ Page A1. ] President Aquino assailed private businesses in the Philippines for a lack of support that has slowed economic recovery. [ D13. ]

International The President is willing to negotiate on disputed issues in the Antiballistic Missile Treaty as a way of bridging differences with Moscow over missile defense systems, Administration officials said. They seemed to suggest that Mr. Reagan was ready to deal with Soviet concerns about missile defenses in the context of a discussion of the 1972 treaty. [ Page A1, Col. 6. ] Shimon Peres flew to Morocco for talks with King Hassan, sources in Jerusalem said. The Israeli Prime Minister's trip, which appeared to be a bid for a dramatic Middle East realignment, was the first journey by an Israeli leader to an Arab state since Israel signed a peace treaty with Egypt in 1979. [ A1:5. ]

Leaders of 60 predominantly black churches, declaring that crack and other drugs represented ''a new form of genocide,'' yesterday set up all-night vigils on several street corners in the city where drug dealing is rampant. The ministers also began 24-hour vigils at their churches, where recovered drug addicts will counsel addicts, and established a hot line from each of the churches to the offices of the state's special narcotics prosecutor, Sterling Johnson Jr. ''Just as in the past we fought slavery and we fought racism, we are going to fight drugs and the total indifference of those in power,'' said the actor Ossie Davis, who is chairman of the United Black Church Appeal. A Grass-Roots Campaign Mr. Davis and the ministers joined City Councilman Wendell Foster, Senator Alfonse M. D'Amato and the entertainer Dick Gregory on the steps of City Hall to begin what they called a grass-roots campaign against drugs.

An article on July 12 about toxic wastes in affluent areas, based on a report by the Council on Economic Priorities, incorrectly cited a New Jersey community as the site of 25 abandoned toxic dump sites. The community, Short Hills, has none. A corrective article appears today on page B5.

BMW, the German luxury auto maker, is trying to make its image more luxurious still. In New York, it has opened a $3.5 million showroom at Park Avenue and 51st Street, replete with $30,000 automobiles, a 15-screen video display of BMW engineering in action, and striking black-and-white portraits by such renowned photographers as Richard Avedon and Henri Cartier-Bresson. In Virginia, the company, together with its local dealers, is sponsoring steeplechase events. In Dallas, it is presenting polo matches. In the Rockies, it is bankrolling downhill ski challenges. And in San Francisco, it is backing a popular running race.

There is a ploy used by corporations when they are worried, even remotely, about becoming the target of an unfriendly takeover. They develop business relationships with as many big commercial banks as possible. The hope is that, because of the relationships, mainstream lenders that organize syndicates will then turn away any raider that might come looking for funds. But the reluctance of some banks to shovel money to corporate raiders is opening up very profitable new business for other, more aggressive financial institutions.

A bold new surgical procedure greatly reduces the muscle spasticity of selected young people with cerebral palsy. Although many treatments involving drugs and physical therapy are available for spasticity, it remains a major problem for those afflicted with cerebral palsy, which leaves many of those who have it with an ungainly, scissoring walk, stiff muscles and slurred speech. The new approach is an improved version of an older surgical technique. It seeks to reduce spasticity by severing selected nerve fibers in the spinal cord. In this way impulses to and from nerve cells that control muscle action are put in proper balance.

In a series of tough measures, the Kroger Company said yesterday that it would close 100 unprofitable supermarkets, possibly dispose of its 900 drugstores and cut headquarters expenses by 25 percent through an early retirement plan for 300 employees. A significant portion of the program's cost will be paid out of Kroger's retirement fund. A spokesman said this could be done because it was ''overfunded.'' As for the drugstores, the company said it might sell a stake in them, spin them off, or establish them as a new company with a public offering.

Prime Minister Shimon Peres secretly flew to Morocco tonight for talks with King Hassan II, Israeli sources here said. The precise purpose of the trip was not immediately disclosed, but it appeared to be an attempt at a dramatic Middle East realignment. The trip by an Israeli leader to an Arab country was the first such high-level visit since Israel signed a peace accord with Egypt in 1979 after Anwar el-Sadat's historic visit here. Flurry of Mideast Moves Mr. Peres's trip seemed part of a flurry of Middle East maneuvering coming after King Hussein of Jordan expelled Yasir Arafat's supporters. The King is battling the Palestine Liberation Organization, led by Mr. Arafat, for the loyalty of Palestinians on the Israeli-occupied West Bank.

Agriculture Department analysts said today that the new farm law, which represented an abrupt policy shift, might cost the Government twice what economists estimated last December. Their official cost estimate for farm programs under the law passed late last year is now $26 billion for the fiscal year 1986, but analysts acknowledged today that it could exceed $31 billion and might soar to $35 billion. The program has not succeeded in stemming the decline in overseas sales of agricultural products, except for cotton and rice, the budget analysts acknowledged. As a result, the costs of taking over and storing surplus crops are mounting rapidly.

At the urging of the White House, Robert J. Brown today officially removed his name from consideration as the next United States Ambassador to South Africa because of difficulties he was expected to face in winning confirmation by the Senate. Mr. Brown withdrew as Mr. Reagan prepared for a major policy address in which White House aides said they expected him to call for the release of Nelson Mandela, the imprisoned leader of the African National Congress. It is already Administration policy, expressed publicly by Secretary of State George P. Shultz, that Mr. Mandela should be released.