Did the warren court exceed its boundaries in issuing some of its decisions during the 1960s?

Yes the Warren Court did exceed its boundaries in issuing some of its decisions during the 1960s. For example the court gave its decision regarding women suffrage and it was not taken well by many women of that time. Many women were forced to suffer the consequences of the decision given by the Warren Court in regards to women's suffrage. 

They made a checks and balance system to equal power within the branches. the "check" meant that one branch would watch one branch and "balance" them if they were too powerful. if you want more info on this, i would just google checks and balance system.