Just three miles from Ground Zero, President Bush last night accepted his party’s nomination for president in a prime time address that began and ended with references to the Sept. 11 attacks. Claiming that the US is the greatest force for good on Earth, Bush defended the invasion of Iraq and vowed to continue a foreign policy based on preemptive attacks. Bush said “I believe that America is called to lead the cause of freedom in a new century.” On domestic issues, Bush reached out to the socially conservative wing of the party condemning abortion, same sex marriages and so-called activist judges. He also promised to simplify the tax system, allow private investments of Social Security funds and push policies that would make it easier to own homes, though he offered few details.