Virulent meetings over healthcare reform lead some in Congress – especially Democrats – to seek less public ways to engage voters.
Top opposition candidates, including defeated presidential candidate Mir Hossein Mousavi, are among those who may be targeted.
Some 1,000 riot police at the inauguration hall held back protesters – whom Iran's Supreme Leader called 'angry and wounded.'
Leading reformist politicians signaled their intent to continue protest over what they say was a fraudulent election.
Many now want more than a rerun of the disputed June 12 election, heightening the standoff with the regime.
Thousands of people clashed with security forces in the streets after a symbolic 40-day period since the death of protesters. Thirty years ago, such protests helped bring down the Shah.
Iran's theocracy, wary that mourning can turn to political protest, shuts down commemoration for opposition "martyr."
In a striking move Tuesday, Supreme Leader Ali Khamenei personally called for a detention center to be closed, citing mistreatment, while President Ahmadinejad sanctions repressive tactics.
President Mahmoud Ahmadinejad fired his intelligence minister Sunday after being forced to remove his first vice president, a close adviser.