While several policy changes could ease the problem, Ms. Heinrich said, none promise a quick solution.
Although interconnectors with other European countries, including Norway, Ireland and the Netherlands, could ease the problem, they would not alone provide a solution, the report concluded.
It would be irresponsible for lawmakers to wring their hands over entitlements and yet deny the government the revenue that could ease the problem.
The Midwest is not as dry as the South, so a few significant rains could ease the problem there, officials said.
A modest investment in wire or digital money transfer systems could ease that problem, reduce the desertion rate and make it harder for corrupt commanders to steal recruits' pay.
While most experts agree that greater prosperity in Mexico is the ultimate solution to keeping its people home, Doris M. Meissner, the I.N.S. commissioner under President Bill Clinton, said cross-border cooperation could ease the problem.
Efforts to stop the reduction of Earth's forest cover and increase the productivity of existing forests, establishment of extensive reforestation programs and plantations of fast-growing tree species, recycling of paper, and improved utilization of wood through research could ease the problem of wood supply.
"In the past, the high speed of economic growth could ease the problems.
Experts say increased recycling could ease these problems.
In theory, consolidation can ease this problem by cutting 8-10% off a broker's costs.
