Most of the members who were in the twelfth Congress were new and were neutral on the idea of going to war. But of course you had a few vocal War Hawks, (along with some farmers who were being affected by the British embargo) who were able to influence him and use his dominance to sway the Congress to go to war.
2. The western part of the U.S. were more vocal because in a sense, most things Great Britain caused effected them more. For example: Great Britain wasn’t too thrilled with the fact the U.S. wanted to expand their territory, like how Kentucky and Tennessee expressed interest in Indian lands, and Canada. That causes problems for the westerners because Great Britain are allies with the Indians so they're able to provide them
2. The western part of the U.S. were more vocal because in a sense, most things Great Britain caused effected them more. For example: Great Britain wasn’t too thrilled with the fact the U.S. wanted to expand their territory, like how Kentucky and Tennessee expressed interest in Indian lands, and Canada. That causes problems for the westerners because Great Britain are allies with the Indians so they're able to provide them