As Republican presidential candidate Donald Trump made his surprise trip to Mexico this week to meet with President Enrique Peña Nieto, one poll suggests his approval rating among African-American has gotten worse.

Public Policy Polling released a preview poll this week revealing that Trump’s favorability rating among African-American voters at zero percent. Other polls show that his approval rating continues to remain in the single digits.

In the same poll, Only 13 percent of African-American and Latinos think Trump actually cares about them compared with 74 percent who say they don’t think he does.

An NBC/Wall Street Journal poll released late last week indicates that nine out of 10 African-American support Democratic presidential candidate Hillary Clinton.

This development comes as several blows hit the Trump campaign while he attempts to appeal to Blacks.

After the fatal shooting of NBA star Dwyane Wade’s 32-year-old cousin in Chicago, Trump tweeted, “Dwyane Wade’s cousin was just shot and killed walking her baby in Chicago. Just what I have been saying. African-Americans will VOTE TRUMP!” Hours later he tweeted condolences to Wade and his family

This week, former KKK Grand Wizard David Duke, who is running for a U.S. Senate seat from Louisiana, put out a robocall asking for votes and for voters to support Trump.

“It’s time to stand up and vote for Donald Trump for president and vote for me, David Duke for the U.S. Senate,” the call said.

Trump’s team, who has been criticized in the past for not fully denouncing Duke’s support, swiftly disavowed the robocall in the media.

“Mr. Trump has continued to denounce David Duke and any group or individual associated with a message of hate,” the campaign said in a statement. “There is no place for this in the Republican Party or our country. We have no knowledge of these calls or any related activities, but strongly condemn and disavow.”

Another blow was a tweet put out by Black Trump surrogate Pastor Mark Burns this week that featured a cartoon of Clinton in blackface. The image was poking fun at Clinton’s taking the Black vote for granted.

Causing a social media firestorm, Burns also took to the media to apologize for his actions. However, he stayed true to the message he was trying to convey.

“I prayed that those who I offended really receive … a sincere apology, because it was never my intention to hurt or to offend anyone,” Burns said in one televised interview. “But the message is very clear in what I was trying to say. Obviously, my message, I stand by it, but the methodology, I do not.”

Trump is scheduled to make a trip to Detroit this weekend to appear on the Black-owned Christian television network, The Impact Network, and be interviewed by Wayne Jackson at Great Faith Ministries.

“Mr. Trump will answer questions that are relevant to the African-American community such as education (including HBCUs), unemployment, making our streets safe and creating better opportunities for all,” Burns said in statement. “He will then give an address to outline policies that will impact minorities and the disenfranchised in our country.”