What power can congress use to stop a president from performing executive functions?

The answer is removal power. Congress can use removal power to stop a president from performing executive functions.

The correct answer to this open question is the following.

The power Congress can use to stop a president from performing executive functions is the Removal Power.

US Congress has the power to impeach the President of the United States and remove it. If Congress considers that the President broke the law or is accused of treason, Congress has the power to remove it. For instance, that was the case of the Watergate scandal, when Congress impeached President Nixon and he resigned. Bill Clinton was also impeached by Congress due to the Monica Lewinsky affair.

i really really really really really really dont know

both are true, the congress does have the power to create banks, even if this power is not specifically described in the constitution, since there is nothing restricting it and there is power given to the congress to make "all laws which shall be necessary and proper". maryland was not allowed to tax a branch of the national bank operating there, and the supreme court decided that no state could. both of these topics were discussed in a decision of the mcculloch v. maryland case in 1819.