A similar ban on chewing tobacco has been in place in baseball's minor leagues for decades. Illinois Senator Dick Durbin and New Jersey Senator Frank Lautenberg, both Democrats, said it was time for the major leagues to follow suit.
"We now know conclusively that smokeless tobacco endangers the health of baseball players who use it, but it also affects millions of young people who watch baseball," Durbin and Lautenberg wrote in a letter to baseball commissioner Bud Selig, which was made available to news organizations on Tuesday.
In the letter, they cited a survey that found use of smokeless tobacco products by high school boys has increased by 36 percent since 2003.
