The compromise counted three out of every five slaves as people, giving the Southern states a third more seats in Congress and a third more electoral votes. The Southerners were using their slaves to their advantage politically.
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In general, you can look at the Supreme court checking congress (by overturning unconstitutional laws), congress checks the president (through investigation committees, and eventually potential impeachment) and the president checks the Supreme court (by appointing justices). There are some smaller checks that run counter to this order (like the President can veto congressional bills), but they're much more minor powers. Most of the time, the "checking" of presidential power by the supreme court happens by the court striking down laws passed through congress that the president has thrown a considerable amount of political weight behind (think many of FDR's new deal programs, some of which were struck down by the court. Obamacare also narrowly had some of it's components struck down by the court). The Supreme court can strike down executive orders that are unconstitutional. President Trump's muslim ban, for instance, had some of it's elements stricken down by the court in just the last month.
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both stress the importance of individual liberty
Harriet Tubman was a very strong woman who wanted to help everyone get to freedom and didn’t want to leave anyone behind. Harriet Tubman was brave and caring. She led many slaves to freedom through the Underground Railroad and is a very influential person to this day. Harriet Tubman is an amazing woman who was very selfless.