"Religious freedom is still not respected for millions of people around the world," Secretary of State Antony Blinken said at a news briefing.
Brazilian police sources said Muslim Abuumar was not coming for a visit but to stay in Brazil and become a spokesman for Hamas.
A new Brazilian ambassador to Israel will be announced in due course, Brazil's foreign relations ministry said in a statement, adding that until then.
'We find ourselves in a difficult period, but there have been many difficult times in history, and this will pass and we will overcome,' Shaked said in a message to Brazilian Jews.
The Brazilian yellow scorpion, or by its scientific name Tityus serrulatus, is considered the most venomous scorpion in South America.
Israeli tourist Alma Buhadana, 24, died in Rio de Janeiro, Brazil, trying to escape a robber. Israeli authorities assist her family in repatriation.
Over the past 20 years, Brazilian-Jewish chef David Hertz has created a cooking school, Gastromotiva, to help underprivileged Brazilians learn a trade and assist Brazil's most vulnerable citizens.
The decision comes amid Brazilian PM Lula da Silva's criticism of Israel.
Since Lula's third term began, Brazil, once a constructive and moderate voice in the Israeli-Palestinian conflict, has pivoted to support the Palestinians at the expense of its ties with Israel.
A recent study suggests prehistoric humans in Brazil created petroglyphs near dinosaur tracks, indicating intentional association. The findings may reshape views on ancient cultures and paleontology.