article: After four weeks in the White House, he said "incredible progress" had been made, having signed some two dozen executive actions and put his signature to several bills. He also fired his scandal-hit national security adviser and an acting attorney general, who defied his seven-nation travel ban, which later suffered an appeals court defeat. So what has President Trump achieved so far? In the weeks and months to come, we'll be tracking the progress he makes on his agenda and how it is received by the American public. One way President Trump is able to exercise political power is through unilateral executive orders and memoranda, which allow him to bypass the legislative process in Congress in certain policy areas. He wasted little time in taking advantage of this privilege, quickly moving to withdraw from the Trans-Pacific Partnership trade deal, cut business regulations and push ahead with completing the construction of two controversial pipelines. While it may appear that President Trump has been signing executive actions at an unprecedented rate, he has signed less than President Obama did during the same period in office. Mr Trump has used many of these actions to deliver on some of his campaign promises, but many of his promises cannot be fulfilled by executive action alone. For example, his first executive order was designed to limit the effect of the Affordable Care Act, better know as Obamacare, but his promise of repealing and replacing it can only be enacted by Congress. In-depth: The executive actions Trump has taken What are presidential executive orders? When Mr Trump took the oath of office on 20 January he did so with the lowest approval rating of any incoming president. He dismissed those polls as "rigged" but the strength of the opposition to him was evident when hundreds of thousands of people took to the streets the day after his inauguration. Most presidents begin their term with strong approval numbers, but President Trump has bucked that trend. While both George W Bush and Barack Obama were enjoying approval numbers in the 60s after one month in office, Mr Trump is around the 40% mark. Donald Trump: Unchained and unapologetic Mr Trump won the election with low approval numbers so it's unsurprising they're still low, but the scandal over his team's contacts with Russia and his controversial travel ban have kept them falling. Do the numbers matter? Maybe not, for now. Republicans control both the House and Senate so in theory he can pursue his legislative agenda without worrying about his ratings - as long as he keeps his Republican colleagues on side. But if his ratings stay low or fall further, expect some dissenting voices to emerge in the party as Republicans start to worry about midterm elections in 2018. For now though, there are signs that many of Mr Trump's supporters are happy with his progress - some we spoke to in Pennsylvania said he was doing "a fabulous job". You can hear their views here. Russia: The scandal Trump can't shake How and why did Trump's key adviser resign?
summary: Donald Trump came into office promising to change the face of American politics and transfer power "back to the people".