There was no LEGITIMATE argument against acquiring new territory, that's covered in the Constitution Article 4 Sec. 3 Clause 1:
New States may be admitted by the Congress into this Union; but no new State shall be formed or erected within the Jurisdiction of any other State; nor any State be formed by the Junction of two or more States, or Parts of States, without the Consent of the Legislatures of the States concerned as well as of the Congress.
However I do not doubt that some complained about the COST.
I have read some things recently that have left me with "uncomfortable" questions about the constitution. I will have to get hold of a copy of the ANTI federalist Papers before I can articulate them well, but 3 things I can mention,
First, While the rights of the STATES, and limitations of Federal Govt. are fairly well stated by the constitution ,it contains no method of ENFORCEMENT beyond insurrection, to prevent the types of encroachment we have seen. Also the fact that the rights of the individual , and limitations on Federal powers are amendments indicates that they were after thoughts, added to get votes for the "real Agenda", just like earmarks today, and that the Framers had no real concern or interest in the Rights of the citizens.
Second thing that bothers me is that it was adopted for ECONOMIC reasons, Debt was not strongly protected under the Articles of Confederation so European money interests were reluctant to invest here, The Constitution was written to reassure Financial interests. Granted that the resulting investment made possible the Industrial Revolution, I can't get away from the fact that Alexander Hamilton was an ambitious schemer, deeply involved with the Morris' and the New York Money interests. One of the main public proponents of the Constitution, he was continuously maneuvering to strengthen federal power.
Lastly, All we have to go by in our understanding of the founders "intent" are public records written by those with a vested interest, I can't escape the thought that this is some what akin to trying to understand modern politics based on the sound bites on NBC.
Just some thoughts.
Tom - that is awesome. I love it when folks here make me think. A couple of thoughts, maybe contrary ones, let's see.
1. Enforcement was not considered, I believe, as quite bluntly the likes of our recent run of presidents was no more considered by the Founders than was a trip to the moon. This was the Age of Reason afterall, and even a King George was reasonable in some respects. A Caesar they could imagine. They could no more envision a bho than they could envision the atomic bomb.
And you're right, the Amendments were specifically added to the body of the Constitution, not so much as an afterthought, more like a guarantee - without rewriting the whole Constitution all over again. It was specifically in response to the fears and concerns raised by the anti-Federalists against a strong Federal government - and yes, to get it passed.
I think, Tom, that you might be a little harsh on the Founders and their attitudes toward rights. Besides the obvious issue of slavery, I think there was a genuine interest in rights as both an intellectual exercise and a real sense of injustice by the Crown against the interests of the colonies and the gentlemen of the day. On the other hand, the Electoral College is an excellent example of their attitudes toward the common man - and recognition of the realities of demagogues. Still, I think many of the Founders saw rights as applying to all - slavery again excepted - so maybe to all freemen?
2. Hamilton was absolutely a strong Federalist, and probably would have been a good example of the people the other Founders warned us against if he had not been whacked by Burr in the duel (Burr being an interesting nut-job too). To put it more into context, though, this was a time where nobodies - like Hamilton - could achieve what we now call the American Dream and actually become somebody through their own efforts alone. Hamilton IIRC was born in the West Indies as an illegitimate son. And here he became one of the most powerful men in the early US through his own actions. We cannot imagine the power of that change today, we have no frame of reference. In modern vernacular, he was on the hump and saw strong central government as a way to achieve that - since he was part of it. The Federal Reserve was started in part as his legacy a century after he was killed.
3. Sound bites - perhaps, but the 30-some articles published by the Federalists alone are a tad more than just a bite. And the anti-Federalist papers were subsequently published to counter the arguments put forth by the Federalists. Perhaps "sound bites" typical of their day. And they all had vested interests - both sides. I have not personally read them, but I recall we also have letters from the protagonists to their friends and family as source materials too.