In 1819, the tallmadge amendment failed in the senate because

I think its because,

the Senate was equally divided between the North and the South

Explanation:

In 1819, the Tallmadge Amendment failed in the Senate because. ... the Senate was equally divided between the North and the South. it had already failed in the House of Representatives. Congress had ended its session without voting.

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

there has only been 12 presidents. the 12th president is/was moon jae-in