On the other hand , Manifest Destiny enthusiasm in the north placed politicians under pressure to admit Texas immediately to the Union .
Now , northern Democrats found themselves vulnerable to charges of appeasement of their southern wing if they capitulated to Tyler 's slavery expansion provisions .
Manifest Destiny enthusiasm in the north placed politicians under pressure to admit Texas immediately to the Union .
Now , northern Democrats found themselves vulnerable to charges of appeasement of their southern wing if they capitulated to Tyler 's slavery expansion provisions .