After implementing the Emancipation Proclamation, Lincoln increased pressure on Congress to outlaw slavery throughout the nation with a constitutional amendment.
ˈæftɚɹ ˈɪmplɪməntɪŋ ðɪ ɪmˌænsɪpˈeɪʃən pɹˌɑːklɐmˈeɪʃən, lˈɪŋkən ɪŋkɹˈiːst pɹˈɛʃɚɹ ˌɔn kˈɑːŋɡɹəs tʊ ˈaʊtlɔː slˈeɪvɚɹi θɹuːˈaʊt ðə nˈeɪʃən wɪð ɐ kˌɑːnstɪtˈuːʃənəl ɐmˈɛndmənt.