Native-born Protestants: 
*Believed that Bible is the basis for the US constitution, laws and liberty.
 
*And the source of wisdom and guidance. 
*Thus, they promise to protect it at all costs. 
*They believe that the immigrants (mostly Catholics) were came to erase the Protestantism thus, creating counteract efforts to fight them like the Know-Nothing Movement. 
*America’s foundation is of Protestant principles. 
*Uphold and protect the principles to prove their commitment.
*He/she must believe these principles with her heart and soul.