Question

Why did some members of the US Congress oppose the annexation of Texas?
A.They did not want to admit another free state to the Union.
B.They did not want to anger Mexico by going against a treaty.
C.They did not want to take control of Texas from Mexico.
D.They did not want to support US President Sam Houston.

Answer 1

The opposition to annexing Texas was largely found in the North, esp. because of concerns about slavery. But there were other reasons for which the national Whig party opposed annexation efforts. That should be some info I hope it helps :/ I have to take a shower now but I hope that helps.

Answer 2

Summary of reasons:
1) it would enhance the slave power (upsetting the slave state/free state balance)
2) it would bring war with Mexico and possibly England
3) it amounted to a landgrab that was counter to U.S. principles of democracy
4) unconsitutional - the U.S. Constitution disallowed annexation (at least in the manner proposed)
5) annexation was a threat to national unity --since the Northern sentiment against it was so strong (see reason #1!)
Heres what I found on the web.