One reason outfielders don't have stronger arms might be they don't practice as much as we did. Most teams today don't take outfield practice. Another reason is baseball has to compete with other sports now - basketball football soccer - for the better athletes that might have more skills and stronger arms.
The thing is if you control the Senate meetings you control the gavel. And the gavel is a very important instrument... an instrument of power. An instrument that establishes the agenda.