Less than a month into his presidency, Donald Trump has issued 17 executive actions. While this number in itself is not remarkable - by the same time, Barack Obama had signed roughly the same number of executive orders - the content of Trump's decrees is. It seems the new president wants to implement many of his campaign promises - including the controversial ones - as quickly as possible.

Executive actions (EA) allow the US president to give government agencies orders that do not need Congressional approval, circumventing the law-making process and speeding up the implementation process. Executive orders are a more wide-reaching form of EA that often deal with larger organizational directives, while presidential memoranda order specific agencies to do something.

Executive Order: The first executive order that Trump signed was a missive on deferring, waving or delaying parts of the Affordable Care Act to "minimize regulatory burdens." While Trump alone can not repeal the healthcare law instated under President Obama, he can undermine the implementation of "Obamacare" while the Republican majority in Congress prepares to repeal the law.

Presidential Memorandum: Trump re-instated a policy that bars US federal funding for non-governmental organizations that provide abortion counseling and advocate for abortion rights. This directive was initially instated by Republican president Ronald Reagan, rescinded by Democrat Bill Clinton, re-instated by Republican George W. Bush and again rescinded by Democrat Barack Obama.

Executive Order: Trump ordered immigration agents to vastly expand the scope of deportations. He wants federal grants to be pulled from sanctuary cities (where undocumented migrants are not prosecuted) and immigrants suspected of a crime to be detained, even if they were not charged. He plans to hire 10,000 new immigration agents and publish a report on crimes committed by undocumented immigrants.

Executive Order: In an executive order signed on January 25, President Trump called for "the immediate construction of a physical wall" in order to secure the US-Mexico border. He also referred to undocumented immigrants as "removable aliens," saying that the executive branch should "end the abuse of parole and asylum provisions currently used to prevent the lawful removal of removable aliens."

Executive Order: Trump signed this controversial order on January 27. It banned people from seven majority-Muslim countries from entering the US for three months, stopped the Syrian refugee program indefinitely and suspended refugee admissions for 120 days. Protests against the order erupted across the country and even Republican senators John McCain and Lindsey Graham criticized the policy.

Memorandum: It was no surprise that Donald Trump abandoned the Trans-Pacific Partnership (TPP). During his campaign, he frequently criticized the TPP and the Transatlantic Trade and Investment Partnership (TTIP), saying that other countries benefited from these trade agreements at the expense of the US. Press secretary Sean Spicer said Trump prefered deals with individual countries.

Three different memoranda: One on constructing the Dakota Access Pipeline, another on continuing construction of the Keystone pipeline, and a third order on using American materials to build all pipelines - were issued on Trump's fourth day in office. Barack Obama had denied permits to both pipelines after massive protests from environmentalists, who feared the potential impact of spills.

Memoranda: Trump quickly lived up to his campaign promise to invest in a bigger military, signing a memorandum for more troops, warships and a modernized nuclear arsenal a week into his presidency. Four days earlier, he ordered a freeze on the hiring of new civilian employees in federal agencies for up to 90 days, so that his administration could develop a long-term plan to shrink the workforce.

Executive order: Every new government appointee will sign an ethics pledge that bans them from working as a lobbyist for five years after leaving their post and from ever lobbying the US government for other countries. On the same day, he issued two further memoranda ordering the Department of Defense to formulate a plan to defeat IS within 30 days and to reorganize the National Security Council.

Memorandum: Trump ordered an overhaul of the National Security Council (NSC) to elevate the role of Stephen Bannon. He removed several senior members from the foreign policy decision-making panel while Trump's chief strategist, known for his far-right views, will serve on the committee usually staffed with generals. This breaks with the long-held norm of not appointing political actors to the NSC.

Executive Orders and Memorandum: Trump wants federal agencies to eliminate at least two prior regulations for every new regulation. He ordered a freeze on new and pending federal regulations, until a Trump-appointed department head could revise them. He also asked for the approval of "high priority infrastructure projects" to be sped up.

President Barack Obama issued a total of 277 executive orders - an average of roughly three per month, slightly fewer than his predecessor George W. Bush at 291. However, Obama issued 644 presidential memoranda during his time in office to get around blocks in Congress - a precedent Trump appears to be following.