Although seen as controversial, the United States was not justified in going to war with Mexico due to large expansion of slavery, the US violation of Mexican Laws, and the robbery and invasion of the Mexican Territory. The United States was not justified in going to war with Mexico due to the large expansion of slavery by the Americans. Massachusetts legislator Charles Sumer explains in the “Objections to the Mexican-American War,” that, “Mexico, on achieving her independence from the Spanish Crown.decreed the abolition of human slavery.” (Sumner). Mexico had clearly stated that slavery was illegal in their nation after separating from Spain. Knowing this, the Americans chose to ignore the laws of Mexico and bring their slaves into Texas regardless of the illegality. Likewise, Charles Sumner clearly states the ignorance of slavery laws, saying that, “...while, in seeking extension of slavery, [our own citizens denied] the great truths of American freedom...” (Sumner). The Americans were defying the Mexican rules and choosing to expand slavery in the Texas …show more content…
After declaring independence from Spain, Mexico created their own defined laws, “Mexico was Catholic, antislavery.American settlers were mostly Protestant, pro-slavery, and largely ignored Mexican authority,” (BGE). It was already evident that the Americans and Mexicans had different beliefs, but the Americans had to follow the beliefs of the Mexicans if they wanted to settle on their land. Instead, the Americans downright ignored the Mexican rules, and continued to do what they wanted, on Mexican land. Being forewarned that slavery was illegal in the territory they were entering, “Slaveholders crossed the Sabine with their slaves, in defiance of the Mexican ordinance of freedom,” (Sumner). The slave owners brought their slaves into Texas, completely against the Mexican laws of no slavery. The Americans were utterly ignoring a major law that the Mexicans have in place for their nation, signaling that they have no issue defying other rules and laws as well. Not only did the Americans expand their slavery, illegally, they broke many other laws as