John, all of your arguments are repeats and no more valid now than when made originally. For brevity, given that you organized them in a single post, I will attempt to organize my final response similarly.
John Creighto said:
1) It is a form of market control. Market controls result in a misalocation of resources (invisible hand theory)
This is no invisible hand theory, even if it were true. Firstly, interest rates are a market function - as said, neither the United States nor the Federal Reserve have the power to set rates in the economy. However, both the Treasury and the Reserve Board have broad tools to incetivise changes in rates towards target levels.
This is a form of market internvention, not control, and does not result in a "misallocation of resources" (there is no such thing; there is no absolutely preferable resource allocation, only scarce resources to satisfy infinite demands and competing mechanisms for rationing their distribution - there are however competing efficiency levels between models). It is not true that economic theory regards the "free market" as strictly preferable to a structured market. Consider gravity - we do not cry foul when engineers build floors to beat gravity. Instead, we consider this a reasonable means of "controlling" gravity. Without them, you'd free fall to sea level. Market law is no different. There are natural causal relationships (normative economics), and there are desirable outcomes (positive economics). Interest rate manipulation is about positively influencing the interest rate market to achieve some desirable outcome (like keeping your economy from falling off a cliff, as hand railings do the same vis a vis gravity).
2) Low interest rates create a disincentive to save.
This is true, and is a good thing. People save when they lack confidence in their individual financial futures. Social safety nets and stable economies discourage savings, which promotes economic growth, in the long-run. In the short run, central banks can use interest rate manipulation to discourage savings during crisis periods.
3) Low interest rates cause market cycles by first causing a credit expansion.
This is not true. Market cycles are natural - they would occur in a flat interest rate environment (consider the numerous recorded cyclical boom/bust periods during the pre-Englightenment era, when there were no formal currency markets or lending mechanisms). Good interest rate policy can mitigate natural cyclical effects; bad interest rate policy can have the opposite effect. This is an argument for interest rate manipulation, not against it.
4) The American public has no capacity left to borrow.
This is not true. There is no absolute "debt ceiling". You as a consumer of debt can borrow as much as someone is willing to lend you. Theoretically, you could borrow an amount approaching infinity, if you could find willing lenders.
5) The cheap money will be used by corporations to invest abroad rather then at home.
This is mostly wrong. Corporations have an incentive to invest wherever capital is cheap. Low domestic interest rates relative to those in foreign countries encourage investments at home, and discourage investments abroad. Further, low interest rates deflate currency values, further discouraging investment abroad and encouraging export growth. To invest abroad, companies must purchase foreign currency. You cannot simply borrow dollars in the United States and use those dollars to buy factory space in Malaysia.
It is true that the increased exports can have the effect of encouraging direct foreign investment, because domestic corporations become flush with foreign currency, and it is often more practical to invest that currency than convert it (at cost). This is not generally considered a bad thing, however (it helps lower the trade deficit, for one).